Supersymmetric relics from the big bang

John Ellis; J. S. Hagelin; D. V. Nanopoulos; K. Olive; M. Srednicki

doi:10.1016/0550-3213(84)90461-9

Supersymmetric relics from the big bang

John Ellis, J. S. Hagelin, D. V. Nanopoulos, K. Olive, M. Srednicki

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

1418 Scopus citations

Abstract

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 10¹⁴ GeV, and probably not above 3 × 10¹² GeV. This imposes constraints on mechanisms for generating the baryon number of the universe.

Original language	English (US)
Pages (from-to)	453-476
Number of pages	24
Journal	Nuclear Physics, Section B
Volume	238
Issue number	2
DOIs	https://doi.org/10.1016/0550-3213(84)90461-9
State	Published - Jun 11 1984

Bibliographical note

Funding Information:
* Work supported by the Department of Energy, contract DE-AC03-76SF00515. t Address as of July 1, 1983: Fermilab, PO Box 500, Batavia, IL 60510. * Address as of Sept. 1, i983: Dept. of Physics, University of Cahfornia, Santa Barbara, CA 93106.

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title = "Supersymmetric relics from the big bang",

abstract = "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 1014 GeV, and probably not above 3 × 1012 GeV. This imposes constraints on mechanisms for generating the baryon number of the universe.",

author = "John Ellis and Hagelin, {J. S.} and Nanopoulos, {D. V.} and K. Olive and M. Srednicki",

note = "Funding Information: * Work supported by the Department of Energy, contract DE-AC03-76SF00515. t Address as of July 1, 1983: Fermilab, PO Box 500, Batavia, IL 60510. * Address as of Sept. 1, i983: Dept. of Physics, University of Cahfornia, Santa Barbara, CA 93106.",

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AU - Ellis, John

AU - Hagelin, J. S.

AU - Nanopoulos, D. V.

AU - Olive, K.

AU - Srednicki, M.

N1 - Funding Information: * Work supported by the Department of Energy, contract DE-AC03-76SF00515. t Address as of July 1, 1983: Fermilab, PO Box 500, Batavia, IL 60510. * Address as of Sept. 1, i983: Dept. of Physics, University of Cahfornia, Santa Barbara, CA 93106.

PY - 1984/6/11

Y1 - 1984/6/11

N2 - 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 1014 GeV, and probably not above 3 × 1012 GeV. This imposes constraints on mechanisms for generating the baryon number of the universe.

AB - 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 1014 GeV, and probably not above 3 × 1012 GeV. This imposes constraints on mechanisms for generating the baryon number of the universe.

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SP - 453

EP - 476

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

IS - 2

ER -

Supersymmetric relics from the big bang

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