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001-es BibID:	BIBFORM099164
035-os BibID:	(WoS)000185804400002 (Scopus)17544398296
Első szerző:	The OPAL Collaboration
Cím:	Search for stable and long-lived massive charged particles in e^+e^- collisions at root{s} = 130-209 GeV / The OPAL Collaboration
Dátum:	2003
ISSN:	0370-2693
Megjegyzések:	A search for stable and long-lived massive particles of electric charge \Q/e\ = 1 or fractional charges of 2/3, 4/3, and 5/3 is reported using data collected by the OPAL detector at LEP, at centre-of-mass energies from 130 to 209 GeV These particles are assumed to be pair-produced in e(+)e(-) collisions and not to interact strongly. No evidence for the production of these particles was observed. Model-independent upper limits on the production cross-section between 0.005 and 0.028 pb have been derived for scalar and spin-1/2 particles with charge +/-1. Within the framework of the Constrained Minimal Supersymmetric Standard Model (CMSSM), this implies a lower limit of 98.0 (98.5) GeV on the mass of long-lived right- (left-)handed scalar muons and scalar taus. Long-lived charged heavy leptons and charginos are excluded for masses below 102.0 GeV For particles with fractional charge +/-2/3, +/-4/3 and +/-5/3, the upper limit on the production cross-section varies between 0.005 and 0.020 pb. All mass and cross-section limits are derived at the 95% confidence level and are valid for particles with lifetimes longer than 10(-6) s.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk 2-PHOTON PRODUCTION PROCESSES MONTE-CARLO SIMULATION MEDIATED SUPERSYMMETRY-BREAKING LOWEST ORDER CALCULATIONS PHYSICS EVENT GENERATION E+E- COLLISIONS HIGH-ENERGY RADIATIVE-CORRECTIONS PAIR-PRODUCTION LEP
Megjelenés:	Physics Letters B. - 572 : 1-2 (2003), p. 8-20. -
További szerzők:	Csilling Ákos Dienes Beatrix (1972-) (élettanász, molekuláris biológus) Gupta A. Hajdú Csaba Horváth Dezső (1966-) (kémikus) Pásztor Gabriella Trócsányi Zoltán (1961-) (fizikus) Ujvári Balázs (1977-) (fizikus) Vértesi Róbert
Pályázati támogatás:	T-038240 OTKA T-042864 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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