Supersymmetric relics from the big bang

Supersymmetric relics from the big bang

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...

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Veröffentlicht in:Nuclear physics. B 1984-01, Vol.238 (2), p.453-476
Hauptverfasser: Ellis, John, Hagelin, J.S., Nanopoulos, D.V., Olive, K., Srednicki, M.
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Sprache:eng
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ASTRONOMY AND ASTROPHYSICS
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Theory of quantized fields
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container_end_page 476
container_issue 2
container_start_page 453
container_title Nuclear physics. B
container_volume 238
creator Ellis, John
Hagelin, J.S.
Nanopoulos, D.V.
Olive, K.
Srednicki, M.
description 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 1 2 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. This imposes constraints on mechanisms for generating the baryon number of the universe.
doi_str_mv 10.1016/0550-3213(84)90461-9
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source ScienceDirect Journals (5 years ago - present)
subjects ASTRONOMY AND ASTROPHYSICS
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Theory of quantized fields
title Supersymmetric relics from the big bang
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