Supersymmetry tests at Fermilab: A proposal

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.2062· OSTI ID:6243963

Lopez, J L; Nanopoulos, D V; Wang, X ^[1]; Zichichi, A ^[2]

---

1. Center for Theoretical Physics, Department of Physics, Texas A M University, College Station, Texas 77843-4242 (United States) Astroparticle Physics Group, Houston Advanced Research Center (HARC), The Woodlands, Texas 77381 (United States)
2. CERN, Geneva (Switzerland)

We compute the number of trilepton events to be expected at Fermilab as a result of the reaction [ital p[bar p]][r arrow][chi][sub 1][sup [plus minus]][chi][sub 2][sup 0][ital X], where [chi][sub 1][sup [plus minus]] is the lightest chargino and [chi][sub 2][sup 0] is the next-to-lightest neutralino. This signal is expected to have very little background and is the best prospect for supersymmetry detection at Fermilab if the gluino and squarks are beyond reach. We evaluate our expressions for all points in the allowed parameter space of two basic supergravity models: (i) the minimal SU(5) supergravity model including the severe constraints from proton decay and a not too young universe and (ii) a recently proposed no-scale flipped SU(5) supergravity model. We study the plausible experimental scenarios and conclude that a large portion of the parameter spaces of these models could be explored with 100 pb[sup [minus]1] of integrated luminosity. In the minimal SU(5) supergravity model chargino masses as high as 100 GeV could be probed. In the no-scale flipped model it should be possible to probe some regions of parameter space with [ital m][sub [chi]1][sup [plus minus]][approx lt]175 GeV, therefore, possibly exceeding the reach of the CERN LEP II for chargino and neutralino (since [ital m][sub [chi]2][sup 0][approx][ital m][sub [chi]1][sup [plus minus]]) masses. In both models such probes would indirectly explore gluino masses much beyond the reach of Fermilab.

• DOE Contract Number: FG05-91ER40633
• OSTI ID: 6243963
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:5; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662210 -- Specific Theories & Interaction Models
662340 -- Hadron Interactions-- (1992-)
662440* -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BRANCHING RATIO
COMPOSITE MODELS
CYCLIC ACCELERATORS
EXTENDED PARTICLE MODEL
FERMILAB TEVATRON
FIELD THEORIES
LUMINOSITY
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PARTICLE MODELS
PHYSICAL PROPERTIES
PROPOSALS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARK MODEL
STRING MODELS
SUPERGRAVITY
SUPERSTRING MODELS
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
SYNCHROTRONS
TESTING
UNIFIED-FIELD THEORIES