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

Jong Chul Park; Kyoungchul Kong; Seong Chan Park

doi:10.1016/j.physletb.2014.04.037

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

Jong Chul Park, Kyoungchul Kong, Seong Chan Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

Abstract

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 2_Eγ 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 language	English
Pages (from-to)	217-220
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	733
DOIs	https://doi.org/10.1016/j.physletb.2014.04.037
Publication status	Published - 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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title = "X-ray line signal from 7 keV axino dark matter decay",

abstract = "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.",

author = "Park, {Jong Chul} and Kyoungchul Kong and Park, {Seong Chan}",

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 ).",

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AU - Kong, Kyoungchul

AU - Park, Seong Chan

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