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Title: Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest

Abstract

The matter power spectrum at comoving scales of (1-40)h{sup -1} Mpc is very sensitive to the presence of Warm Dark Matter (WDM) particles with large free-streaming lengths. We present constraints on the mass of WDM particles from a combined analysis of the matter power spectrum inferred from the large samples of high-resolution high signal-to-noise Lyman-{alpha} forest data of Kim et al. (2004) and Croft et al. (2002) and the cosmic microwave background data of WMAP. We obtain a lower limit of m{sub WDM} > or approx. 550 eV (2{sigma}) for early decoupled thermal relics and m{sub WDM} > or approx. 2.0 keV (2{sigma}) for sterile neutrinos. We also investigate the case where in addition to cold dark matter a light thermal gravitino with fixed effective temperature contributes significantly to the matter density. In that case the gravitino density is proportional to its mass, and we find an upper limit m{sub 3/2} < or approx. 16 eV (2{sigma}). This translates into a bound on the scale of supersymmetry breaking, {lambda}{sub susy} < or approx. 260 TeV, for models of supersymmetric gauge mediation in which the gravitino is the lightest supersymmetric particle.

Authors:
;  [1];  [2];  [3];  [4]
  1. Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom)
  2. Laboratoire de Physique Theorique LAPTH, F-74941 Annecy-le-Vieux Cedex (France)
  3. Dipartimento di Fisica 'G. Galilei', Universita di Padova, Via Marzolo 8, I-35131 Padova (Italy)
  4. INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova (Italy)
Publication Date:
OSTI Identifier:
20706201
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 71; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevD.71.063534; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMIC RADIATION; DENSITY; ENERGY SPECTRA; EV RANGE; KEV RANGE; NEUTRINOS; NONLUMINOUS MATTER; RADIOWAVE RADIATION; RELICT RADIATION; REST MASS; SPARTICLES; SUPERSYMMETRY; SYMMETRY BREAKING; TEV RANGE

Citation Formats

Viel, Matteo, Haehnelt, Martin G, Lesgourgues, Julien, INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, Matarrese, Sabino, INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, and Riotto, Antonio. Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.71.063534.
Viel, Matteo, Haehnelt, Martin G, Lesgourgues, Julien, INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, Matarrese, Sabino, INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, & Riotto, Antonio. Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest. United States. https://doi.org/10.1103/PhysRevD.71.063534
Viel, Matteo, Haehnelt, Martin G, Lesgourgues, Julien, INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, Matarrese, Sabino, INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, and Riotto, Antonio. Tue . "Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest". United States. https://doi.org/10.1103/PhysRevD.71.063534.
@article{osti_20706201,
title = {Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest},
author = {Viel, Matteo and Haehnelt, Martin G and Lesgourgues, Julien and INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova and Matarrese, Sabino and INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova and Riotto, Antonio},
abstractNote = {The matter power spectrum at comoving scales of (1-40)h{sup -1} Mpc is very sensitive to the presence of Warm Dark Matter (WDM) particles with large free-streaming lengths. We present constraints on the mass of WDM particles from a combined analysis of the matter power spectrum inferred from the large samples of high-resolution high signal-to-noise Lyman-{alpha} forest data of Kim et al. (2004) and Croft et al. (2002) and the cosmic microwave background data of WMAP. We obtain a lower limit of m{sub WDM} > or approx. 550 eV (2{sigma}) for early decoupled thermal relics and m{sub WDM} > or approx. 2.0 keV (2{sigma}) for sterile neutrinos. We also investigate the case where in addition to cold dark matter a light thermal gravitino with fixed effective temperature contributes significantly to the matter density. In that case the gravitino density is proportional to its mass, and we find an upper limit m{sub 3/2} < or approx. 16 eV (2{sigma}). This translates into a bound on the scale of supersymmetry breaking, {lambda}{sub susy} < or approx. 260 TeV, for models of supersymmetric gauge mediation in which the gravitino is the lightest supersymmetric particle.},
doi = {10.1103/PhysRevD.71.063534},
url = {https://www.osti.gov/biblio/20706201}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 6,
volume = 71,
place = {United States},
year = {2005},
month = {3}
}