Supercollider signals from gluino and squark decays to Higgs bosons

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.303· OSTI ID:7044199

Baer, H ^[1]; Bisset, M; Tata, X ^[2]; Woodside, J ^[3]

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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)
3. Department of Physics, Iowa State University and Ames Laboratory, Ames, Iowa 50011 (United States)

If the mass of the charged Higgs boson of the minimal supersymmetric model (MSSM) is smaller than about 150 GeV, the branching fraction for heavy gluinos and left-handed squarks to cascade decay to the heavier Higgs bosons {ital H}{sub {ital h}}, {ital H}{sub {ital p}}, and {ital H}{sup {plus minus}} of the MSSM may be as large as 50--60 % for values of supersymmetric parameters consistent with experimental data. These decays, which have been assumed to be kinematically inaccessible in earlier analyses, can potentially lead to significant modification of the cross section for missing {ital E}{sub {ital T}} ({ital E}{sub {ital T}}), same-sign dilepton, and multilepton events from squarks and gluinos. We find that the {ital E}{sub {ital T}}, same-sign dilepton, and trilepton production rates are relatively insensitive to low values of {ital m}{sub {ital H}}{sup +}, so that these remain viable signals for the identification of gluinos and squarks at the Superconducting Super Collider or the CERN Large Hadron Collider. Finally, our exploratory study shows that substantial production of {ital H}{sub {ital h}} and {ital H}{sub {ital p}}({ital H}{sup {plus minus}}) in gluino and squark pair events can lead to {ital E}{sub {ital T}} events with anomalously large numbers of {ital b} quarks ({tau} leptons). There also exist small regions of parameter space where the {ital H}{sub {ital l}} and {ital H}{sub {ital h}} may be identifiable via the presence of {gamma}{gamma} in {ital E}{sub {ital T}} events.

• DOE Contract Number: FG05-87ER40319; AM03-76SF00235
• OSTI ID: 7044199
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
DECAY
ELEMENTARY PARTICLES
FERMIONS
GLUONS
HADRON-HADRON INTERACTIONS
HIGGS BOSONS
INTERACTIONS
LEPTONS
LIE GROUPS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MULTIPLETS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTONS
POSTULATED PARTICLES
QUARKS
STANDARD MODEL
STORAGE RINGS
SU GROUPS
SU-2 GROUPS
SUPERCONDUCTING SUPER COLLIDER
SUPERMULTIPLETS
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS