X-ray line signal from 7 keV axino dark matter decay

Jong Chul Park, Kyoungchul Kong, Seong Chan Park

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

Recently a weak X-ray emission around ≃ 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 2 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.

Original languageEnglish
Pages (from-to)217-220
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume733
DOIs
Publication statusPublished - 2014 Jun 2

Bibliographical note

Funding Information:
K.K. is supported by the U.S. DOE under Grant No. DE-FG02-12ER41809 and by the University of Kansas General Research Fund allocation 2301566. J.C.P. is supported by Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education ( NRF-2013R1A1A2061561 ). S.C.P. is supported by Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future planning ( 2011-0010294 ) and the Ministry of Education ( 2011-0010294 , 2011-0029758 and NRF-2013R1A1A2064120 ).

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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