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001-es BibID:	BIBFORM099599
035-os BibID:	(WoS)000178751800009 (Scopus)0037057656
Első szerző:	The OPAL Collaboration
Cím:	Search for scalar top and scalar bottom quarks at LEP / The OPAL Collaboration
Dátum:	2002
ISSN:	0370-2693
Megjegyzések:	Searches for a scalar top quark and a scalar bottom quark have been performed using a data sample of 438 pb(-1) at centre-of-mass energies of roots- = 192-209 GeV collected with the OPAL detector at LEP. No evidence for a signal was found. The 95% confidence level lower limit on the scalar top quark mass is 97.6 GeV if the mixing angle between the supersymmetric partners of the left- and right-handed states of the top quark is zero. When the scalar top quark decouples from the Z(0) boson, the lower limit is 95.7 GeV. These limits were obtained assuming that the scalar top quark decays into a charm quark and the lightest neutralino, and that the mass difference between the scalar top quark and the lightest neutralino is larger than 10 GeV. The complementary decay mode of the scalar top quark decaying into a bottom quark, a charged lepton and a scalar neutrino has also been studied. The lower limit on the scalar top quark mass is 96.0 GeV for this decay mode, if the mass difference between the scalar top quark and the scalar neutrino is greater than 10 GeV and if the mixing angle of the scalar top quark is zero. From a search for the scalar bottom quark, a mass limit of 96.9 GeV was obtained if the mass difference between the scalar bottom quark and the lightest neutralino is larger than 10 GeV.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Physics Letters B. - 545 : 3-4 (2002), p. 272-284. -
További szerzők:	Csilling Ákos Dienes Beatrix (1972-) (élettanász, molekuláris biológus) Hajdú Csaba Horváth Dezső (1966-) (kémikus) Pásztor Gabriella Trócsányi Zoltán (1961-) (fizikus) Ujvári Balázs (1977-) (fizikus)
Pályázati támogatás:	T-029328 OTKA T-038240 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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