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Kang, ZF; Ko, P; Li, TJ; Liu, YD; Kang, ZF (reprint author), Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China.
Natural X-ray lines from the low scale supersymmetry breaking
发表期刊PHYSICS LETTERS B
语种英语
摘要In the supersymmetric models with low scale supersymmetry (SUSY) breaking where the gravitino mass is around keV, we show that the 3.5 keV X-ray lines can be explained naturally through several different mechanisms: (I) a keV scale dark gaugino plays the role of sterile neutrino in the presence of bilinear R-parity violation. Because the light dark gaugino obtains Majorana mass only via gravity mediation, it is a decaying warm dark matter (DM) candidate; (II) the compressed cold DM states, whose mass degeneracy is broken by gravity mediated SUSY breaking, emit such a line via the heavier one decay into the lighter one plus photon(s). A highly supersymmetric dark sector may readily provide such kind of system; (III) the light axino, whose mass again is around the gravitino mass, decays to neutrino plus gamma in the R-parity violating SUSY. Moreover, we comment on dark radiation from dark gaugino. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
2015
卷号742期号:0页码:249-255
学科领域Astronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1016/j.physletb.2015.01.040
收录类别SCI
项目资助者China Postdoctoral Science Foundation [2013M530006] ; China Postdoctoral Science Foundation [2013M530006] ; China Postdoctoral Science Foundation [2013M530006] ; China Postdoctoral Science Foundation [2013M530006] ; National Research Foundation of Korea (NRF) Research Grant [2012R1A2A1A01006053] ; National Research Foundation of Korea (NRF) Research Grant [2012R1A2A1A01006053] ; National Research Foundation of Korea (NRF) Research Grant [2012R1A2A1A01006053] ; National Research Foundation of Korea (NRF) Research Grant [2012R1A2A1A01006053] ; MEST through Korea Neutrino Research Center at Seoul National University [20120001176] ; MEST through Korea Neutrino Research Center at Seoul National University [20120001176] ; MEST through Korea Neutrino Research Center at Seoul National University [20120001176] ; MEST through Korea Neutrino Research Center at Seoul National University [20120001176] ; National Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246] ; National Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246] ; National Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246] ; National Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000]
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21064
专题理论物理所科研产出_SCI论文
通讯作者Kang, ZF (reprint author), Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China.
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GB/T 7714
Kang, ZF,Ko, P,Li, TJ,et al. Natural X-ray lines from the low scale supersymmetry breaking[J]. PHYSICS LETTERS B,2015,742(0):249-255.
APA Kang, ZF,Ko, P,Li, TJ,Liu, YD,&Kang, ZF .(2015).Natural X-ray lines from the low scale supersymmetry breaking.PHYSICS LETTERS B,742(0),249-255.
MLA Kang, ZF,et al."Natural X-ray lines from the low scale supersymmetry breaking".PHYSICS LETTERS B 742.0(2015):249-255.
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