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High Energy Physics - Phenomenology

arXiv:0711.1570 (hep-ph)
[Submitted on 10 Nov 2007 (v1), last revised 1 Feb 2008 (this version, v4)]

Title:Sterile neutrino dark matter in warped extra dimensions

Authors:Kenji Kadota
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Abstract: We consider a (long-lived) sterile neutrino dark matter scenario in a five dimensional (5D) warped extra dimension model where the fields can live in the bulk, which is partly motivated from the absence of the absolutely stable particles in a simple Randall-Sundrum model. The dominant production of the sterile neutrino can come from the decay of the radion (the scalar field representing the brane separation) around the electroweak scale. The suppressions of the 4D parameters due to the warp factor and the small wave function overlaps in the extra dimension help alleviate the exceeding fine-tunings typical for a sterile neutrino dark matter scenario in a 4D setup.
Comments: Typos corrected and references added
Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)
Report number: FTPI-MINN-07/30, UMN-TH-2621/07
Cite as: arXiv:0711.1570 [hep-ph]
  (or arXiv:0711.1570v4 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.0711.1570
Journal reference: Phys.Rev.D77:063509,2008
Related DOI: https://doi.org/10.1103/PhysRevD.77.063509

Submission history

From: Kenji Kadota [view email]
[v1] Sat, 10 Nov 2007 04:57:11 UTC (17 KB)
[v2] Mon, 19 Nov 2007 05:27:36 UTC (17 KB)
[v3] Fri, 1 Feb 2008 19:55:53 UTC (17 KB)
[v4] Fri, 1 Feb 2008 21:46:38 UTC (17 KB)
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