18
QCD Matter: A Search for a Mixed Quark-Hadron Phase XXXIII INTERNATIONAL CONFERENCE ON HIGH ENERGY PHYSICS ICHEP'06 Moscow, 26.07- 02.08, 2006 A.N.Sissakian, A.S.Sorin, V.D.Toneev

QCD Matter: A Search for a Mixed Quark-Hadron Phase

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QCD Matter: A Search for a Mixed Quark-Hadron Phase. A.N.Sissakian, A.S.Sorin, V.D.Toneev. XXXIII INTERNATIONAL CONFERENCE ON HIGH ENERGY PHYSICS ICHEP'06 Moscow, 26.07- 02.08, 2006. Classification of phase transitions. The n th order phase transition:. is discontinuous. - PowerPoint PPT Presentation

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Page 1: QCD Matter: A Search for a Mixed Quark-Hadron Phase

QCD Matter A Search for a Mixed Quark-Hadron Phase

XXXIII INTERNATIONAL CONFERENCE ON HIGH ENERGY PHYSICSICHEP06 Moscow 2607- 0208 2006

ANSissakian ASSorin VDToneev

Classification of phase transitions

The nth order phase transition

)( 21 n

i

xxxFxn

n

is discontinuous

xk - thermodynamic variables

F - thermodynamic potential

Discontinuty of A = AII λ + AII (1 - λ) originates from discontinuty of λ = VII V

A mixed phase in different representations

λ=0

λ=1

λ=0

λ=1

0ltλlt1

Critical end-point =gt critical end-line =gt critical end-boundary hypersurface

ASKhvorostukhinANSissakian VVSkokov ASSorin VDToneev

(to be published)

0ltλlt1

λ=1

λ=0λ=0

λ=1

T T

μ=const μ=const

For central collisions at the Nuclotron energy even if an average state of the whole strongly interacting system does not approach the mixed phase an essential part of the system volume will spend a certain time in the mixed phase

PHASE DIAGRAMS

YBIvanov VNRusskikhVDToneev Phys Rev C73 044904 (2006)

Systems with two conserving charges

EoS relativistic mean field + bag model

T=0

ZA=ρQρB

x=(ρQ - ρB)(2ρB)x=ZA-05

Hadronic side of the phase boundary decreases with increasing isospin asymmetry This effect is strongly model dependent

HMueller Nucl Phys A618 349 (1997)

ASKhvorostukhin et al(to be published)

M Di Toro et al nucl-th0602052

Semi-central U+U (1 AGeV) collision

A rather exotic nuclear matter is formed in a transient time of the order of 10 fmc having the baryon density around 3ρ0 the temperature 50-60 MeV the energy density 500 MeV fm-3 and the proton fraction ZA between 035 and 040

M Di Toro et al nucl-th0602052

ρBT

ε ZA

ρB

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 2: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Classification of phase transitions

The nth order phase transition

)( 21 n

i

xxxFxn

n

is discontinuous

xk - thermodynamic variables

F - thermodynamic potential

Discontinuty of A = AII λ + AII (1 - λ) originates from discontinuty of λ = VII V

A mixed phase in different representations

λ=0

λ=1

λ=0

λ=1

0ltλlt1

Critical end-point =gt critical end-line =gt critical end-boundary hypersurface

ASKhvorostukhinANSissakian VVSkokov ASSorin VDToneev

(to be published)

0ltλlt1

λ=1

λ=0λ=0

λ=1

T T

μ=const μ=const

For central collisions at the Nuclotron energy even if an average state of the whole strongly interacting system does not approach the mixed phase an essential part of the system volume will spend a certain time in the mixed phase

PHASE DIAGRAMS

YBIvanov VNRusskikhVDToneev Phys Rev C73 044904 (2006)

Systems with two conserving charges

EoS relativistic mean field + bag model

T=0

ZA=ρQρB

x=(ρQ - ρB)(2ρB)x=ZA-05

Hadronic side of the phase boundary decreases with increasing isospin asymmetry This effect is strongly model dependent

HMueller Nucl Phys A618 349 (1997)

ASKhvorostukhin et al(to be published)

M Di Toro et al nucl-th0602052

Semi-central U+U (1 AGeV) collision

A rather exotic nuclear matter is formed in a transient time of the order of 10 fmc having the baryon density around 3ρ0 the temperature 50-60 MeV the energy density 500 MeV fm-3 and the proton fraction ZA between 035 and 040

M Di Toro et al nucl-th0602052

ρBT

ε ZA

ρB

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 3: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Discontinuty of A = AII λ + AII (1 - λ) originates from discontinuty of λ = VII V

A mixed phase in different representations

λ=0

λ=1

λ=0

λ=1

0ltλlt1

Critical end-point =gt critical end-line =gt critical end-boundary hypersurface

ASKhvorostukhinANSissakian VVSkokov ASSorin VDToneev

(to be published)

0ltλlt1

λ=1

λ=0λ=0

λ=1

T T

μ=const μ=const

For central collisions at the Nuclotron energy even if an average state of the whole strongly interacting system does not approach the mixed phase an essential part of the system volume will spend a certain time in the mixed phase

PHASE DIAGRAMS

YBIvanov VNRusskikhVDToneev Phys Rev C73 044904 (2006)

Systems with two conserving charges

EoS relativistic mean field + bag model

T=0

ZA=ρQρB

x=(ρQ - ρB)(2ρB)x=ZA-05

Hadronic side of the phase boundary decreases with increasing isospin asymmetry This effect is strongly model dependent

HMueller Nucl Phys A618 349 (1997)

ASKhvorostukhin et al(to be published)

M Di Toro et al nucl-th0602052

Semi-central U+U (1 AGeV) collision

A rather exotic nuclear matter is formed in a transient time of the order of 10 fmc having the baryon density around 3ρ0 the temperature 50-60 MeV the energy density 500 MeV fm-3 and the proton fraction ZA between 035 and 040

M Di Toro et al nucl-th0602052

ρBT

ε ZA

ρB

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 4: QCD Matter: A Search for a Mixed Quark-Hadron Phase

For central collisions at the Nuclotron energy even if an average state of the whole strongly interacting system does not approach the mixed phase an essential part of the system volume will spend a certain time in the mixed phase

PHASE DIAGRAMS

YBIvanov VNRusskikhVDToneev Phys Rev C73 044904 (2006)

Systems with two conserving charges

EoS relativistic mean field + bag model

T=0

ZA=ρQρB

x=(ρQ - ρB)(2ρB)x=ZA-05

Hadronic side of the phase boundary decreases with increasing isospin asymmetry This effect is strongly model dependent

HMueller Nucl Phys A618 349 (1997)

ASKhvorostukhin et al(to be published)

M Di Toro et al nucl-th0602052

Semi-central U+U (1 AGeV) collision

A rather exotic nuclear matter is formed in a transient time of the order of 10 fmc having the baryon density around 3ρ0 the temperature 50-60 MeV the energy density 500 MeV fm-3 and the proton fraction ZA between 035 and 040

M Di Toro et al nucl-th0602052

ρBT

ε ZA

ρB

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 5: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Systems with two conserving charges

EoS relativistic mean field + bag model

T=0

ZA=ρQρB

x=(ρQ - ρB)(2ρB)x=ZA-05

Hadronic side of the phase boundary decreases with increasing isospin asymmetry This effect is strongly model dependent

HMueller Nucl Phys A618 349 (1997)

ASKhvorostukhin et al(to be published)

M Di Toro et al nucl-th0602052

Semi-central U+U (1 AGeV) collision

A rather exotic nuclear matter is formed in a transient time of the order of 10 fmc having the baryon density around 3ρ0 the temperature 50-60 MeV the energy density 500 MeV fm-3 and the proton fraction ZA between 035 and 040

M Di Toro et al nucl-th0602052

ρBT

ε ZA

ρB

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 6: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Semi-central U+U (1 AGeV) collision

A rather exotic nuclear matter is formed in a transient time of the order of 10 fmc having the baryon density around 3ρ0 the temperature 50-60 MeV the energy density 500 MeV fm-3 and the proton fraction ZA between 035 and 040

M Di Toro et al nucl-th0602052

ρBT

ε ZA

ρB

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 7: QCD Matter: A Search for a Mixed Quark-Hadron Phase

PRESSURE-DENSITY DEPENDENCE FOR TWO CONSERVING CHARGES

HMueller Nucl Phys A618 349 (1997)

For iso-asymmetric systems (xlt0) the pressure changes during the first-order phase transition increasing with the baryon density Theregion of the mixed phase is getting larger

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 8: QCD Matter: A Search for a Mixed Quark-Hadron Phase

ENTROPY-TEMPERATURE DEPENDENCE

HMueller Nucl Phys A618 349 (1997)

Transition remains the first-order phase transition in the iso-asymmetric matter

ASKhvorostukhin et al(to be published)

μB=1300 MeVμS=300 MeVμQ =-100 MeV

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 9: QCD Matter: A Search for a Mixed Quark-Hadron Phase

M Di Toro et al nucl-th0602052

Finite size effects (Coulomb surface tension)

A strong dependence of the transition boundary on ZA survives

Without finite size effect

With finite size effect

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 10: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Chiku and Hatsuda PRD58 (lsquo98)Hatsuda Kunihiro and Shimizu PRL82 (rsquo99)

MVolkov EKuraev DBlaschke GRumlopke SSchmidt PLB(1998)

Signals and precursors

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 11: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Observation of new resonance structure in the invariant mass spectrum of two γ-quanta in dC-interactions at momentum 275 GeVc per nucleon

Invariant mass distribution of pairs of γ-quanta in the d + C rarr γ + γ + х reaction after subtraction of the event-mixing background The signals-to-background ratios for the invariant mass intervals 300 divide 420 MeV and 480 divide 600 MeV (η) are 2710-2-2 and 89middot10-2 -2 ((40plusmn14)10-3-3 and 32middot10-2 -2 without the background suppression)

The η-mesonMη = 5405plusmn21 MeV

Wresolution= 672plusmn40 MeV statistics 5200 events of

15middot106 triggered interactions of a total

number 3middot1012 dC-interactions

KhU Abraamyan AN Sissakian AS Sorin nucl-ex0607027

New resonance M = 355plusmn6plusmn9 MeV Г = 41plusmn12 MeV σ ~ 06 μb (prelim)statistics 2680plusmn310 events of 15middot106 triggered interactions of a total number 3middot1012 dC-interactions

200 400 600 800

0

500

1000

1500

2000

Co

un

ts (

30 M

eV

)

M [MeV]

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
Page 12: QCD Matter: A Search for a Mixed Quark-Hadron Phase

STATISTICAL FLUCTUATIONS

VVBegun MIGorenstein et al nucl-th0606036

Central Pb+Pb collisionsNegative hadrons Positive hadrons

The exact charge conservation is very important in the Nuclotron energy While the energy Elab ~ 10 A GeV is approached the resonance decay is getting sizableIsotopic asymmetry results in essentially different behavior of the reduced dispersions ω- and ω+ in the Nuclotron energy range Elab lt 10 A GeV

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

  • Slide 1
  • Slide 2
  • Slide 3
  • Slide 4
  • Slide 5
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Page 13: QCD Matter: A Search for a Mixed Quark-Hadron Phase

NUCLOTRON JINRProject parameters maximum energy

5 GeVnucl for nuclei with А ~ 200Upgraded Nuclotron up to 10 GeVnucl

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

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Page 14: QCD Matter: A Search for a Mixed Quark-Hadron Phase

Phases of strongly interacting matter

httpwwwgside

Nuclotron

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

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Page 15: QCD Matter: A Search for a Mixed Quark-Hadron Phase

NuclotronFAIR GSI

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

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  • Slide 2
  • Slide 3
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  • Slide 18
Page 16: QCD Matter: A Search for a Mixed Quark-Hadron Phase

1 A study of the phase diagram in the domain populated by heavy-ion collisions with the bombarding energy ~ 5 divide 10 GeVnucleon to search

for the mixed phase seems to be a very attractive task

2 The use of the isospin asymmetry as an additional conserving parameter to characterize the created hot and dense system attracts new interest in this problem (critical end-boundary hypersurface )

3 The available theoretical predictions are strongly model dependent giving rather dispersive results There are no lattice QCD predictions for this highly nonpertubative region Much theoretical work should be done and only future experiments may disentangle these models

4 A JINR Nuclotron possibility of accelerating heavy ions to the project energy of 5A GeV and increasing it up to 10A GeV can be realized in two-three years This will enable us to effort a unique opportunity for scanning heavy-ion interactions in energy centrality and isospin asymmetry It seems to be optimal to have the gold and uranium beams in order to scan in isospin asymmetry in both central and semi-central collisions at not so high temperatures

Conclusions

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

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Page 17: QCD Matter: A Search for a Mixed Quark-Hadron Phase

We greatly appreciate many useful and valuable discussions with

YuPGangrsky GGGulbikyan MGItkis ADKovalenko RLednicky AIMalakhov INMeshkov YuEPenionshkevich GMTer-Akopyan

KhYAbraamyan JGBrankovASKhvorostukhin VBPriezzhev VVSkokov DNVoskresensky

MGazdzicki MGorenstein HGutbrod THollman YuMSinyukov GMZinovjev

VG Kadyshevsky VA Matveev and AN Tavkhelidze

THANK YOU FOR ATTENTION

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Page 18: QCD Matter: A Search for a Mixed Quark-Hadron Phase

THANK YOU FOR ATTENTION

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