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research article

More on cosmological constraints on spontaneous R-symmetry breaking models

Hamada, Yuta
•
Kamada, Kohei
•
Kobayashi, Tatsuo
Show more
2014
Journal Of Cosmology And Astroparticle Physics

We study the spontaneous R-symmetry breaking model and investigate the cosmological constraints on this model due to the pseudo Nambu-Goldstone boson, R-axion. We consider the R-axion which has relatively heavy mass in order to complement our previous work. In this regime, model parameters, R-axions mass and R-symmetry breaking scale, are constrained by Big Bang Nucleosynthesis and overproduction of the gravitino produced from R-axion decay and thermal plasma. We find that the allowed parameter space is very small for high reheating temperature. For low reheating temperature, the U(1)(R) breaking scale f(a) is constrained as f(a) < 10(12-14) GeV regardless of the value of R-axion mass.

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Type
research article
DOI
10.1088/1475-7516/2014/01/024
Web of Science ID

WOS:000331134400025

Author(s)
Hamada, Yuta
Kamada, Kohei
Kobayashi, Tatsuo
Ookouchi, Yutaka
Date Issued

2014

Publisher

Iop Publishing Ltd

Published in
Journal Of Cosmology And Astroparticle Physics
Issue

1

Start page

024

Subjects

supersymmetry and cosmology

•

cosmology of theories beyond the SM

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPPC  
Available on Infoscience
April 14, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/102831
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