NEUTRINO EMISSION FROM DARK MATTER ANNIHILATION/DECAY IN LIGHT OF COSMIC e(+/-) AND (p)over-bar DATA

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	NEUTRINO EMISSION FROM DARK MATTER ANNIHILATION/DECAY IN LIGHT OF COSMIC e(+/-) AND (p)over-bar DATA
	Liu, J ; Yuan, Q ; Bi, XJ ; Li, H ; Zhang, XM
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS A
	2012
卷号	27 期号:6
关键词	RAYS PARAMETERS CLUMPINESS ENERGIES MODEL
ISSN号	0217-751X
通讯作者	Liu, J (reprint author), Chinese Acad Sci, Div Theoret Phys, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China.
中文摘要	A self-consistent global fitting method based on the Markov Chain Monte Carlo technique to study the dark matter (DM) property associated with the cosmic ray electron/positron excesses was developed in our previous work. In this work we further improve the previous study to include the hadronic branching ratio of DM annihilation/decay. The PAMELA (p) over bar /p data are employed to constrain the hadronic branching ratio. We find that the 95% (2 sigma) upper limits of the quark branching ratio allowed by the PAMELA (p) over bar /p data is similar to 0.032 for DM annihilation and similar to 0.044 for DM decay, respectively. This result shows that the DM coupling to pure leptons is indeed favored by the current data. Based on the global fitting results, we further study the neutrino emission from DM in the galactic center. Our predicted neutrino flux is some smaller than previous works since the constraint from gamma-rays is involved. However, it is still capable to be detected by the forthcoming neutrino detector such as IceCube. The improved points of the present study compared with previous works include: (1) the DM parameters, both the particle physical ones and astrophysical ones, are derived in a global fitting way, (2) constraints from various species of data sets, including gamma-rays and antiprotons are included, and (3) the expectation of neutrino emission is fully self-consistent.
收录类别	SCI
资助信息	National Natural Science Foundation of China [90303004, 10533010, 10675136, 10803001]; Chinese Academy of Science [KJCX3-SYW-N2]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/49809]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Liu, J,Yuan, Q,Bi, XJ,et al. NEUTRINO EMISSION FROM DARK MATTER ANNIHILATION/DECAY IN LIGHT OF COSMIC e(+/-) AND (p)over-bar DATA[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2012,27(6).
APA	Liu, J,Yuan, Q,Bi, XJ,Li, H,&Zhang, XM.(2012).NEUTRINO EMISSION FROM DARK MATTER ANNIHILATION/DECAY IN LIGHT OF COSMIC e(+/-) AND (p)over-bar DATA.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,27(6).
MLA	Liu, J,et al."NEUTRINO EMISSION FROM DARK MATTER ANNIHILATION/DECAY IN LIGHT OF COSMIC e(+/-) AND (p)over-bar DATA".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 27.6(2012).