More on cosmological constraints on spontaneous R-symmetry breaking models
arXiv:1310.0118 · doi:10.1088/1475-7516/2014/01/024
Abstract
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.
15 pages, 4 figures, published in JCAP
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Cited by in corpus (5)
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- PeV-Scale SUSY and Cosmic Strings from F-term Hybrid Inflation
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