Journal
PHYSICS LETTERS B
Volume 733, Issue -, Pages 217-220Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2014.04.037
Keywords
X-ray; Neutrino; Dark matter; key events; Axino; BICEP2
Funding
- U.S. DOE [DE-FG02-12ER41809]
- University of Kansas [2301566]
- National Research Foundation of Korea - Ministry of Education [NRF-2013R1A1A2061561]
- National Research Foundation of Korea - Ministry of Science, ICT & Future planning [2011-0010294]
- Ministry of Education [2011-0010294, 2011-0029758, NRF-2013R1A1A2064120]
- National Research Foundation of Korea [2013R1A1A2061561, 2013R1A1A2064120, 2011-0010294] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Recently a weak X-ray emission around E-gamma similar or equal to 3.5 keV 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 2E(gamma) 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. (C) 2014 The Authors. Published by Elsevier B.V.
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