Experimental constraints on a stringy SU(5){times}U(1) model

Journal Article · Wed May 01 04:00:00 EDT 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.5253· OSTI ID:286140

Lopez, J L ^[1]; Nanopoulos, D ^[2]; Zichichi, A ^[3]

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1. Department of Physics, Bonner Nuclear Lab, Rice University, 6100 Main Street, Houston, Texas 77005 (United States)
2. Center for Theoretical Physics, Department of Physics, Texas A&M University, College Station, Texas 77843-4242 (United States)
3. CERN, 1211 Geneva 23, Switzerl

We reexamine the phenomenological aspects of a recently proposed string-derived SU(5){times}U(1) one-parameter supergravity model, and explore the sensitivity of the model predictions to variations in the strong coupling and the string unification scale. We also perform an analysis of the constraints on the parameter space of the model in light of the recent Fermilab Tevatron trilepton data and the CERN LEP 1.5 chargino and slepton data. We obtain {ital m}{sub {chi}{sub 1}}{sup {plus_minus}}{approx_gt}70GeV, which excludes one-third of the parameter space of the model. The remainder of the parameter space should be probed by ongoing analyses of the Tevatron trilepton data and forthcoming LEP 2 runs. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Texas A&M Research Foundation
• DOE Contract Number: FG05-91ER40633; FG05-92ER40717
• OSTI ID: 286140
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CERN
COUPLING
FERMILAB TEVATRON
LIMITING VALUES
PARAMETRIC ANALYSIS
STRING MODELS
SU-5 GROUPS
SUPERGRAVITY
U-1 GROUPS