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Title: Perturbative reheating in Sneutrino-Higgs cosmology

Abstract

The theory of perturbative reheating in the Sneutrino-Higgs cosmology of the B-L MSSM is presented. It is shown that following an epoch of inflation consistent with all Planck2015 data, the inflaton begins to oscillate around its minimum at zero and to reheat to various species of standard model and supersymmetric matter. The perturbative decay rates to this matter are computed, both analytically and numerically. Using these results, the Hubble parameter and the relative energy densities for each matter species, including that of the inflaton, are calculated numerically. The inflaton energy density is demonstrated to vanish at an energy scale of O (10 13) GeV, signaling the end of the period of reheating. The newly created matter background is shown to be in thermal equilibrium, with a reheating temperature of ≃ 1.13 × 10 13 GeV. To allow for a B-L breaking scale sufficiently smaller than the reheating scale, we extend the statistical method of determining the soft supersymmetry breaking parameters developed in previous work. The result is that one can determine a large number of phenomenologically realistic initial conditions for which the B-L breaking scale is an order of magnitude or more smaller than the reheating scale.

Authors:
ORCiD logo [1];  [2];  [2];  [3]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Physics and Astronomy; Univ. of Chinese Academy of Sciences (CAS), Beijing (China). School of Physics
  2. Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Physics and Astronomy
  3. Manhattanville Coll., Purchase, NY (United States). Dept. of Physics
Publication Date:
Research Org.:
Univ. of Pennsylvania, Philadelphia, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1505202
Grant/Contract Number:  
[SC0007901]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
[Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 9]; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS; Cosmology of Theories beyond the SM; Supersymmetric Effective Theories

Citation Formats

Cai, Yong, Deen, Rehan, Ovrut, Burt A., and Purves, Austin. Perturbative reheating in Sneutrino-Higgs cosmology. United States: N. p., 2018. Web. doi:10.1007/jhep09(2018)001.
Cai, Yong, Deen, Rehan, Ovrut, Burt A., & Purves, Austin. Perturbative reheating in Sneutrino-Higgs cosmology. United States. doi:10.1007/jhep09(2018)001.
Cai, Yong, Deen, Rehan, Ovrut, Burt A., and Purves, Austin. Sat . "Perturbative reheating in Sneutrino-Higgs cosmology". United States. doi:10.1007/jhep09(2018)001. https://www.osti.gov/servlets/purl/1505202.
@article{osti_1505202,
title = {Perturbative reheating in Sneutrino-Higgs cosmology},
author = {Cai, Yong and Deen, Rehan and Ovrut, Burt A. and Purves, Austin},
abstractNote = {The theory of perturbative reheating in the Sneutrino-Higgs cosmology of the B-L MSSM is presented. It is shown that following an epoch of inflation consistent with all Planck2015 data, the inflaton begins to oscillate around its minimum at zero and to reheat to various species of standard model and supersymmetric matter. The perturbative decay rates to this matter are computed, both analytically and numerically. Using these results, the Hubble parameter and the relative energy densities for each matter species, including that of the inflaton, are calculated numerically. The inflaton energy density is demonstrated to vanish at an energy scale of O (1013) GeV, signaling the end of the period of reheating. The newly created matter background is shown to be in thermal equilibrium, with a reheating temperature of ≃ 1.13 × 1013 GeV. To allow for a B-L breaking scale sufficiently smaller than the reheating scale, we extend the statistical method of determining the soft supersymmetry breaking parameters developed in previous work. The result is that one can determine a large number of phenomenologically realistic initial conditions for which the B-L breaking scale is an order of magnitude or more smaller than the reheating scale.},
doi = {10.1007/jhep09(2018)001},
journal = {Journal of High Energy Physics (Online)},
number = [9],
volume = [2018],
place = {United States},
year = {2018},
month = {9}
}

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