Could the next generation of cosmology experiments exclude supergravity?

A. Barrau and N. Ponthieu
Phys. Rev. D 69, 105021 – Published 28 May 2004
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Abstract

Gravitinos are expected to be produced in any local supersymmetric model. Using their abundance prediction as a function of the reheating energy scale, we argue that the next generation of cosmic microwave background experiments could exclude supergravity or strongly favor “thermal-like” inflation models if B mode polarized radiation were detected. Galactic cosmic-ray production by evaporating primordial black holes is also investigated as a way of constraining the Hubble mass at the end of inflation. Subsequent limits on the gravitino mass and on the related grand unification parameters are derived.

  • Received 5 August 2003

DOI:https://doi.org/10.1103/PhysRevD.69.105021

©2004 American Physical Society

Authors & Affiliations

A. Barrau*

  • Laboratory for Subatomic Physics and Cosmology, CNRS-IN2P3/Joseph Fourier University, 53 av des Martyrs, 38026 Grenoble cedex, France

N. Ponthieu

  • Institute for Space Astrophysics, CNRS-INSUE/Paris-Sud University 91405, Orsay, France

  • *Electronic address: Aurelien.Barrau@cern.ch; URL: http://lpsc.in2p3.fr/ams/aurelien/aurel.html
  • Electronic address: Nicolas.ponthieu@ias.u-psud.fr

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Vol. 69, Iss. 10 — 15 May 2004

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