TY - JOUR
T1 - X-ray line signal from 7 keV axino dark matter decay
AU - Park, Jong Chul
AU - Kong, Kyoungchul
AU - Park, Seong Chan
PY - 2014/6/2
Y1 - 2014/6/2
N2 - Recently a weak X-ray emission around Eγ ≃ 3.5keV was detected in the Andromeda galaxy and various galaxy clusters including the Perseus galaxy cluster but its source has been unidentified. Axino, the superpartner of axion, with a mass 2Eγ is suggested as a possible origin of the line with R-parity violating decay into photon and neutrino. Moreover, most of parameter space is consistent with recent observation by the BICEP2 experiment.
AB - Recently a weak X-ray emission around Eγ ≃ 3.5keV was detected in the Andromeda galaxy and various galaxy clusters including the Perseus galaxy cluster but its source has been unidentified. Axino, the superpartner of axion, with a mass 2Eγ is suggested as a possible origin of the line with R-parity violating decay into photon and neutrino. Moreover, most of parameter space is consistent with recent observation by the BICEP2 experiment.
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U2 - 10.1016/j.physletb.2014.04.037
DO - 10.1016/j.physletb.2014.04.037
M3 - Article
AN - SCOPUS:84899837880
VL - 733
SP - 217
EP - 220
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -