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Title: Supersymmetric relics from the big bang

Abstract

In this paper, we consider the cosmological constraints on supersymmetric theories with a new, stable particle. Circumstantial evidence points to a neutral gauge/Higgs fermion as the best candidate for this particle, and we derive bounds on the parameters in the lagrangian which govern its mass and couplings. One favored possibility is that the lightest neutral supersymmetric particle is predominantly a photino ~γ with mass above 12 GeV, while another is that the lightest neutral supersymmetric particle is a Higgs fermion with mass above 5 GeV or less than O(100) eV. We also point out that a gravitino mass of 10 to 100 GeV implies that the temperature after completion of an inflationary phase cannot be above 10 14 GeV, and probably not above 3 × 10 12 GeV. Finally, this imposes constraints on mechanisms for generating the baryon number of the universe.

Authors:
 [1];  [1];  [2];  [2];  [2]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Sponsoring Org.:
USDOE
OSTI Identifier:
1432463
Report Number(s):
SLAC-PUB-3171
Journal ID: ISSN 0550-3213; PII: 0550321384904619
Grant/Contract Number:  
AC03-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. B
Additional Journal Information:
Journal Volume: 238; Journal Issue: 2; Journal ID: ISSN 0550-3213
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Ellis, John, Hagelin, J. S., Nanopoulos, D. V., Olive, K., and Srednicki, M. Supersymmetric relics from the big bang. United States: N. p., 1984. Web. doi:10.1016/0550-3213(84)90461-9.
Ellis, John, Hagelin, J. S., Nanopoulos, D. V., Olive, K., & Srednicki, M. Supersymmetric relics from the big bang. United States. doi:10.1016/0550-3213(84)90461-9.
Ellis, John, Hagelin, J. S., Nanopoulos, D. V., Olive, K., and Srednicki, M. Fri . "Supersymmetric relics from the big bang". United States. doi:10.1016/0550-3213(84)90461-9. https://www.osti.gov/servlets/purl/1432463.
@article{osti_1432463,
title = {Supersymmetric relics from the big bang},
author = {Ellis, John and Hagelin, J. S. and Nanopoulos, D. V. and Olive, K. and Srednicki, M.},
abstractNote = {In this paper, we consider the cosmological constraints on supersymmetric theories with a new, stable particle. Circumstantial evidence points to a neutral gauge/Higgs fermion as the best candidate for this particle, and we derive bounds on the parameters in the lagrangian which govern its mass and couplings. One favored possibility is that the lightest neutral supersymmetric particle is predominantly a photino ~γ with mass above 12 GeV, while another is that the lightest neutral supersymmetric particle is a Higgs fermion with mass above 5 GeV or less than O(100) eV. We also point out that a gravitino mass of 10 to 100 GeV implies that the temperature after completion of an inflationary phase cannot be above 1014 GeV, and probably not above 3 × 1012 GeV. Finally, this imposes constraints on mechanisms for generating the baryon number of the universe.},
doi = {10.1016/0550-3213(84)90461-9},
journal = {Nuclear Physics. B},
number = 2,
volume = 238,
place = {United States},
year = {1984},
month = {6}
}

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