Εθνικό Μετσόβιο Πολυτεχνείο Τμήμα Εφαρμοσμένων...
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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 PresentationTRANSCRIPT
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0910105911.04.2006
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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
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(1978 - ?) ( , ),
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;,: , . . . . . ...
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+ Higgs +
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, , , .
, , .
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- Dirac - E2 = p2 + m2 i/t p -i Klein-Gordon (2/t2 - 2 + m2 )(x,t) = 0 : 1) E2 = p2 + m2
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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!
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:0 = i =
0 = 1 =
2 = 3 =
1000010000-10000-1
000-i00i00i00-i000
0i-i0
0010000-1-10000100
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i , 0 4x4, , , Dirac.
: # + 0 , = : j #
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, , , : ) 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)}
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Drell-Yan
:() Drell-Yan () , .
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, (), / ().
() ()
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:
(d2/dmdcos)=d2/dmdcos(DY)+cI+c2C
:c=1/2 , m = +- = [(,p+)+(E,p-)]2, Drell-Yan C .
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(D0-Run II)
Fermilab (Tevatron)
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Monte Carlo : , Drell-Yan, D0, .
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. , . . (pT-kick)
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: (cosmic ray cuts) (isolation cuts) (track quality cuts)
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Drell-Yan. - . . .
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Monte Carlo Drell-Yan MC cos() .
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. , .
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|cos|
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Bayesian c . : Monte Carlo .
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. , 95% CL, 4.2 9.8 TeV .
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, 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 . , , .. .