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High Energy Physics - Phenomenology

arXiv:hep-ph/0510003 (hep-ph)
[Submitted on 1 Oct 2005 (v1), last revised 26 Oct 2005 (this version, v2)]

Title:Reheat Temperature and the Right-handed Neutrino Mass

Authors:Takeshi Fukuyama, Tatsuru Kikuchi, Wade Naylor
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Abstract: We discuss the reheating temperature in the instant preheating scenario. In this scenario, at the last stage of inflation, the inflaton field first decays into another scalar field with an enormous number density via the instant preheating mechanism. Subsequently, the produced scalar field decays into normal matter accompanied by the usual reheating mechanism. As an inflationary model, we identify the inflaton as a field which gives rise to a mass for the right-handed (s)neutrino. One of the interesting consequences of the instant preheating mechanism is the fact that the reheating temperature is proportional to the mass of the decayed particle, {\it the right-handed sneutrino}, $T_R \propto M_R$. This is very different from the ordinary perturbative reheating scenario in which the reheating temperature is proportional to the mass of the inflaton.
Comments: 3 pages, title changed, the version to appear in Phys. Lett. B
Subjects: High Energy Physics - Phenomenology (hep-ph); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)
Report number: RITS-PP-005
Cite as: arXiv:hep-ph/0510003
  (or arXiv:hep-ph/0510003v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0510003
Journal reference: Phys.Lett. B632 (2006) 349-351
Related DOI: https://doi.org/10.1016/j.physletb.2005.10.066

Submission history

From: Tatsuru Kikuchi [view email]
[v1] Sat, 1 Oct 2005 07:16:01 UTC (37 KB)
[v2] Wed, 26 Oct 2005 10:40:07 UTC (36 KB)
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