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Εθνικό Μετσόβιο Πολυτεχνείο Τμήμα Εφαρμοσμένων Μαθηματικών και Φυσικών Επιστημών. Έρευνα για ανίχνευση δομής στα κουάρκ και τα λεπτόνια. Μιχαλάκης Κωνσταντίνος 09101059 11.04.2006. Ιστορική αναδρομή. 5 ος αιώνας π.Χ. Λεύκιππος - Δημόκριτος 1808 Dalton ( Ατομική θεωρία) - PowerPoint PPT Presentation
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.
0910105911.04.2006
5 .. - 1808 Dalton ( ) 1897 J.J. Thomson ( e-) 1911 Rutherford ( ) 1932 Chadwick ( ) 1956 e (Cowan , Reines) 1968 up down SLAC 1976 (-) 1979 (g) DESY 1983 W Z CERN(Rubbia, Van der Meer) 1995 top Fermilab 2000 Fermilab
(1978 - ?) ( , ),
;,: , . . . . . ...
+ Higgs +
+
, , , .
, , .
---------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------
Dirac, P>0, /t , , .
i(x,t)/t = [-i + 0m] (x,t) ( Dirac)
. Dirac Klein-Gordon : i2 = 02 =1, ij+ ji = 0, i0 + 0i = 0 Dirac i , 0 4x4!
:0 = i =
0 = 1 =
2 = 3 =
1000010000-10000-1
000-i00i00i00-i000
0i-i0
0010000-1-10000100
i , 0 4x4, , , Dirac.
: # + 0 , = : j #
---------------------------------------------------------------------
, , , : ) ii)
:
Lql = (g02/2) { LL (qL#qL)(L#L) + LR(qL#qL)(R#R) + RL (uR#uR)(L#L) + RL (dR#dR)(L#L) + RR (uR#uR)(R#R) + RR (dR#dR)(R#R)}
Drell-Yan
:() Drell-Yan () , .
, (), / ().
() ()
:
(d2/dmdcos)=d2/dmdcos(DY)+cI+c2C
:c=1/2 , m = +- = [(,p+)+(E,p-)]2, Drell-Yan C .
(D0-Run II)
Fermilab (Tevatron)
Monte Carlo : , Drell-Yan, D0, .
. , . . (pT-kick)
: (cosmic ray cuts) (isolation cuts) (track quality cuts)
Drell-Yan. - . . .
Monte Carlo Drell-Yan MC cos() .
. , .
|cos|
Bayesian c . : Monte Carlo .
. .
. , 95% CL, 4.2 9.8 TeV .
, Donald H. Perkins , . Introduction to elementary particles , David Griffiths Elementary particles data bookSearching for quark-lepton compositeness at LHC, E. C. Katsoufis, ATLAS internal noteQuark-lepton contact interactions and high-mass isolated dileptos at LHC, S. D. P. VlassopoulosSearch for Quark-Lepton compositeness in the dimuon channel with 400 pb-1 D0 Run II data, D0 pleliminary results for Winter 2005 Conferenceswww-d0.fnal.gov
Feynmann . , , .. .