New signals for gluinos and squarks of supergravity at the Fermilab Tevatron collider

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.R2978· OSTI ID:6243946

Baer, H; Kao, C ^[1]; Tata, X ^[2]

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1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
2. Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822 (United States)

Within the supergravity framework, sleptons are expected to be considerably lighter than squarks if gluinos and squarks are approximately degenerate. This can lead to a significant enhancement in leptonic branching ratio for neutralinos, and, sometimes, charginos. Using ISAGET 7.0 and/or ISASUSY 1.0, we evaluate the multilepton signals from cascade decays of gluinos and squarks produced at the Fermilab Tevatron [ital p[bar p]] collider assuming squark and slepton masses are related as in supergravity models. We find observable cross sections for spectacular event topologies: [ital m] lepton +[ital n], jet+[ital E][sub [ital T]] events ([ital m][le]4, [ital n][ge]2) and same-sign dilepton +[ital E][sub [ital T]] events and show that the SM backgrounds to the isolated trilepton, four-lepton, and same-sign dilepton signals are very small. These signals can extend the mass reach of the Tevatron experiments to [ital m][sub [ital [tilde g]]][similar to]30 GeV if [ital m][sub [ital [tilde g]]][similar to][ital m][sub [ital [tilde q]]] and [similar to]1000 pb[sup [minus]1] of data are collected.

• DOE Contract Number: FG05-87ER40319; AM03-76SF00235
• OSTI ID: 6243946
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 48:7; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pa
SUPERGRAVITY
FERMILAB TEVATRON
BRANCHING RATIO
CROSS SECTIONS
FERMILAB COLLIDER DETECTOR
PROTON-ANTIPROTON INTERACTIONS
SUPERSYMMETRY
TOPOLOGY
ACCELERATORS
BARYON-BARYON INTERACTIONS
CYCLIC ACCELERATORS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATHEMATICS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
SYMMETRY
SYNCHROTRONS
UNIFIED-FIELD THEORIES
662440* - Properties of Other Particles Including Hypothetical Particles- (1992-)
662210 - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)
662340 - Hadron Interactions- (1992-)