Exploration of decaying dark matter in a left-right symmetric model

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	Exploration of decaying dark matter in a left-right symmetric model
	Guo, Wan-Lei; Wu, Yue-Liang; Zhou, Yu-Feng; Guo, WL , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
刊名	PHYSICAL REVIEW D
	2010
卷号	81 期号:7 页码:-
关键词	Cosmic-ray Positron Cp Violation Ii Seesaw Parity Pamela Propagation Abundance Energies Fraction Signals
ISSN号	1550-7998
英文摘要	SU(2)(L) triplet scalars appear in models motivated for the left-right symmetry, neutrino masses, and dark matter (DM), etc. If the triplets are the main decay products of the DM particle, and carry nonzero lepton numbers, they may decay dominantly into lepton pairs, which can naturally explain the current experimental results reported by PAMELA and Fermi-LAT or ATIC. We discuss this possibility in an extended left-right symmetric model in which the decay of the DM particle is induced by tiny soft charge-conjugation (C) violating interactions, and calculate the spectra for cosmic-ray positrons, neutrinos, and gamma rays. We show that the DM signals in the flux of high energy neutrinos can be significantly enhanced, as the triplets couple to both charged leptons and neutrinos with the same strength. In this scenario, the predicted neutrino-induced muon flux can be several times larger than the case in which the DM particle only directly decays into charged leptons. In addition, the charged components of the triplet may give an extra contribution to the high energy gamma rays through an internal bremsstrahlung process, which depends on the mass hierarchy between the DM particle and the triplet scalars.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000277201900074
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5133]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Guo, WL , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Guo, Wan-Lei,Wu, Yue-Liang,Zhou, Yu-Feng,et al. Exploration of decaying dark matter in a left-right symmetric model[J]. PHYSICAL REVIEW D,2010,81(7):-.
APA	Guo, Wan-Lei,Wu, Yue-Liang,Zhou, Yu-Feng,&Guo, WL , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China.(2010).Exploration of decaying dark matter in a left-right symmetric model.PHYSICAL REVIEW D,81(7),-.
MLA	Guo, Wan-Lei,et al."Exploration of decaying dark matter in a left-right symmetric model".PHYSICAL REVIEW D 81.7(2010):-.