TY - JOUR
T1 - Cosmological constraints on spontaneous R-symmetry breaking models
AU - Hamada, Yuta
AU - Kamada, Kohei
AU - Kobayashi, Tatsuo
AU - Ookouchi, Yutaka
PY - 2013/4
Y1 - 2013/4
N2 - We study general constraints on spontaneous R-symmetry breaking models coming from the cosmological effects of the pseudo Nambu-Goldstone bosons, R-axions. They are substantially produced in the early Universe and may cause several cosmological problems. We focus on relatively long-lived R-axions and find that in a wide range of parameter space, models are severely constrained. In particular, R-axions with mass less than 1 MeV are generally ruled out for relatively high reheating temperature, TR > 10 GeV.
AB - We study general constraints on spontaneous R-symmetry breaking models coming from the cosmological effects of the pseudo Nambu-Goldstone bosons, R-axions. They are substantially produced in the early Universe and may cause several cosmological problems. We focus on relatively long-lived R-axions and find that in a wide range of parameter space, models are severely constrained. In particular, R-axions with mass less than 1 MeV are generally ruled out for relatively high reheating temperature, TR > 10 GeV.
UR - http://www.scopus.com/inward/record.url?scp=84877998909&partnerID=8YFLogxK
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U2 - 10.1088/1475-7516/2013/04/043
DO - 10.1088/1475-7516/2013/04/043
M3 - Article
AN - SCOPUS:84877998909
VL - 2013
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
SN - 1475-7516
IS - 4
M1 - 043
ER -