TY - JOUR
T1 - Gravitational production of hidden photon dark matter in light of the XENON1T excess
AU - Nakayama, Kazunori
AU - Tang, Yong
N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research C (No. 18K03609 [KN]) and Innovative Areas (No. 17H06359 [KN]). This work was supported by Natural Science Foundation of China under Grant No. 11851302 and by the Fundamental Research Funds for the Central Universities [YT].
Publisher Copyright:
© 2020 The Authors
PY - 2020/12/10
Y1 - 2020/12/10
N2 - Recently, the XENON1T experiment has reported an excess in the electronic recoil events. The excess is consistent with the interpretation of absorption of 3 keV bosonic dark matter, for example, hidden photon dark matter with kinetic mixing of the order of 10−15. We point out that the minimally gravitational production provides a viable mechanism for obtaining a correct relic hidden photon abundance. We present parameter dependence of the hidden photon dark matter abundance on the inflationary scale Hinf and also the reheating temperature TR. We show that the inflationary Hubble scale and reheating temperature are both bounded from below, Hinf≳7×1011 GeV,TR≳102 GeV. In particular, the high-scale inflation is consistent with 3 keV hidden photon dark matter.
AB - Recently, the XENON1T experiment has reported an excess in the electronic recoil events. The excess is consistent with the interpretation of absorption of 3 keV bosonic dark matter, for example, hidden photon dark matter with kinetic mixing of the order of 10−15. We point out that the minimally gravitational production provides a viable mechanism for obtaining a correct relic hidden photon abundance. We present parameter dependence of the hidden photon dark matter abundance on the inflationary scale Hinf and also the reheating temperature TR. We show that the inflationary Hubble scale and reheating temperature are both bounded from below, Hinf≳7×1011 GeV,TR≳102 GeV. In particular, the high-scale inflation is consistent with 3 keV hidden photon dark matter.
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U2 - 10.1016/j.physletb.2020.135977
DO - 10.1016/j.physletb.2020.135977
M3 - Article
AN - SCOPUS:85097422939
SN - 0370-2693
VL - 811
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 135977
ER -