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マッハ錐についてのコメント 「ジェットの v 2 」 と 「ジェット分布の変化」 は区別できるのか ? 筑波大、物理、江角晋一. jet. jet. p. p. p. p. Au. Au. Leading hadrons. Medium. jet modification and cone like structure. STAR preliminary. 0-5% Pb +Au 17GeV p T trig =2.5-4 GeV/c p T assoc =1-2.5 GeV/c. PHENIX nucl-ex/0611019. - PowerPoint PPT Presentation
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マッハ錐についてのコメント
「ジェットの v2」 と 「ジェット分布の変化」 は区別できるのか ?
筑波大、物理、江角晋一
jet
p p
Au Au
jet
p p
Leadinghadrons
Medium
STARpreliminary
0-12% 200 GeV Au+Au
PHENIX nucl-ex/0611019
PHENIX Preliminary10-20% Au+Au 200GeVpT
trig=2.5-4 GeV/c pT
assoc=1-2.5 GeV/c
STAR preliminary0-12% Au+Au 200GeVpT
trig=3-4 GeV/c pT
assoc=1-2 GeV/c
CERES preliminary
0-5% Pb +Au 17GeV pT
trig=2.5-4 GeV/c pT
assoc=1-2.5 GeV/c
CERES preliminary0-5% Pb +Au 17GeV pT
trig=2.5-4 GeV/c pT
assoc=1-2.5 GeV/c
jet modification and cone like structure
The bulk and jet interaction is there, but in Cu+Cu/Au+Au and SPS-RHIC?!?
nucl-ex/0611019PRL 97 052301
STAR, PRL93 (2004) 252301.
|trig-RP|
PHENIX, nucl-ex/0510019.
jet modification and its correlation with v2
jet shape w.r.t. reaction plane geometrical effect of the almond shapeThis effect itself is a one of v2 sources,which will be an important effect at LHC.This should also lead different v2 between bulk and jet.
筑波大 4年 齊藤飛鳥 卒業研究
|asso.- R.P.| |trig.- R.P.| |asso.- trig..|
1.6
1.0
0.4
1.6
1.0
0.4
1.3
1.0
0.7
1.3
1.0
0.7
1.3
1.0
0.7
C1 (dNsingle/d||) C2 (dNpair/d|trig.-asso.|)
v2asso. v2
trig.
pTasso.
0.7-1.7GeV/cpT
trig.
1.7-4GeV/c
in-plane trigger
out-of-plane trigger
all pairs
|asso.- trig..|
1/N
trig
. dN
asso
./d|
trig
.-as
so.|
AMPT 200GeV Au+Au → charged hadrons (|y|<2.0)
string-melting 10mbstring-melting 3mbdefault AMPT 3mb
b = 12 fm ~ b = 8~12 fm b = 4~8 fm b = 0~4 fm
1/N
trig
. dN
asso
./d|
trig
.-as
so.|
|trig.-asso.| (rad)
pTasso. : 0.7-1.7GeV/c
pTtrig. : 1.7-4GeV/c
筑波大 4年 塩原尚希 卒業研究
AMPT 200GeV Au+Au → charged hadrons (|y|<2.0)pT
asso. : 0.7-1.7GeV/cpT
trig. : 1.7-4GeV/c
trigger at in-planeaveragetrigger at out-of-plane
b = 12 fm ~ b = 8~12 fm b = 4~8 fm b = 0~4 fm
|trig.-asso.| (rad)
1/N
trig
. dN
asso
./d|
trig
.-as
so.|
v2thermal = v2
jet
average inclusive v2 (v2
thermal + v2jet)
v2asso.*v2
trig.
all pairs Jet-matter interaction should modify the jet shape depending on the orientation with respect to the ellipse axis. The suppression caused by the interaction gives high pT v2, while the modification would change the low-mid pT v2.
dNpair/d||
答え：区別できない。
inclusive
dNsingle/d||
jet
Back-ups
nucl-ex/0611019
PRL 97 052301
1/N
trig
. dN
asso
./d|
trig
.-as
so.|
AMPT 200GeV Au+Au (b=0-4fm) → charged hadrons (|y|<2.0)
|trig.-asso.| (rad)
pTasso. : 0.5-1.5GeV/c
pTtrig. : 1.5-4GeV/c
pTasso. : 0.7-1.7GeV/c
pTtrig. : 1.7-4GeV/c
pTasso. : 1-2GeV/c
pTtrig. : 2-4GeV/c
pTasso. : 1-2.5GeV/c
pTtrig. : 2.5-4GeV/c
C2 (
dNpa
ir/d
|tr
ig.-
asso
.|) -
flo
w(v
2 trig
. *v 2 as
so. )
|trig.-asso.| (rad)
AMPT 200GeV Au+Au (b=0-4fm) → charged hadrons (|y|<2.0)
pTasso. : 0.5-1.5GeV/c
pTtrig. : 1.5-4GeV/c
pTasso. : 0.7-1.7GeV/c
pTtrig. : 1.7-4GeV/c
pTasso. : 1-2GeV/c
pTtrig. : 2-4GeV/c
pTasso. : 1-2.5GeV/c
pTtrig. : 2.5-4GeV/c
AMPT 200GeV Au+Au (b=0-4fm) → charged hadrons (|y|<2.0)1/
Ntr
ig.
dNas
so./d
|tr
ig.-
asso
.|
|trig.-asso.| (rad)
default AMPT 3mbdefault AMPT 10mb
string-melting 3mbstring-melting 10mb
pTasso. : 0.7-1.7GeV/c
pTtrig. : 1.7-4GeV/c
AMPT 200GeV Au+Au → charged hadrons (|y|<2.0)1/
Ntr
ig.
dNas
so./d
|tr
ig.-
asso
.|string-melting 3mbstring-melting 10mb
|trig.-asso.| (rad)
central (b=0-4fm) peripheral (b=8-12fm)
pTasso. : 0.7-1.7GeV/c
pTtrig. : 1.7-4GeV/c
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