Predictions in SU(5) supergravity grand unification with proton stability and relic density constraints

Pran Nath and R. Arnowitt
Phys. Rev. Lett. 70, 3696 – Published 14 June 1993
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Abstract

It is shown that in the physically interesting domain of the parameter space of SU(5) supergravity grand unified theory, the Higgs-boson and Z poles dominate the annihilation of the lightest supersymmetric particle. Here the naive analyses on thermal averaging breaks down and formulas are derived which give a rigorous treatment over the poles. These results are then used to show that there exist significant domains in the parameter space where the constraints of proton stability and cosmology are simultaneously satisifed. New upper limits on light particle masses are obtained.

  • Received 12 April 1993

DOI:https://doi.org/10.1103/PhysRevLett.70.3696

©1993 American Physical Society

Authors & Affiliations

Pran Nath and R. Arnowitt

  • Tata Institute of Fundamental Research, Homi Bhabha Road,Colaba, Bombay 400 005
  • Department of Physics, Northeastern University, Boston, Massachusetts 02115
  • Physics Research Division, Superconducting Super Collider Laboratory, Dallas, Texas 75237
  • Center for Theoretical Physics, Department of Physics, Texas A&M University, College Station, Texas 77843-4242

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Issue

Vol. 70, Iss. 24 — 14 June 1993

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