PROSPECTS FOR SUPERSYMMETRY AT CERN-LEP-2

Citation
H. Baer et al., PROSPECTS FOR SUPERSYMMETRY AT CERN-LEP-2, Physical review. D. Particles and fields, 52(9), 1995, pp. 5031-5044
Citations number
46
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
0556-2821
Volume
52
Issue
9
Year of publication
1995
Pages
5031 - 5044
Database
ISI
SICI code
0556-2821(1995)52:9<5031:PFSAC>2.0.ZU;2-S
Abstract
Working within the framework of the minimal supergravity (SUGRA) model with gauge coupling unification and radiative electroweak symmetry br eaking we map out regions of parameter space explorable by experiments at CERN LEP 2, for center-of-mass energy options of root s = 150, 175 , 190, and 205 GeV. We compute signals from all accessible 2 --> 2 sup ersymmetry (SUSY) pair production processes using the ISAJET simulatio n program, and devise cuts that enhance the signal relative to standar d model backgrounds, and which also serve to differentiate various sup ersymmetric processes from one another. We delineate regions of SUGRA parameter space where production of neutralino pairs, chargino pairs, slepton pairs, and the production of the light Higgs scalar of SUSY is detectable above standard model backgrounds and distinguishable from other SUSY processes. In addition, we find small regions of SUGRA para meter space where ($) over tilde e ($) over tilde e, ($) over tilde Z( 2) ($) over tilde Z(2), and ($) over tilde V-L ($) over tilde V-L prod uction yields spectacular events with up to four isolated leptons. The combined regions of parameter space explorable by LEP 2 are compared with the reach of Fermilab Tevatron Main Injector era experiments. Fin ally, we comment on how the reach via the neutralino pair channel is a ltered when the radiative electroweak symmetry breaking constraint is relaxed.