Upper limits on dark matter annihilation cross sections from the first AMS-02 antiproton data

	Upper limits on dark matter annihilation cross sections from the first AMS-02 antiproton data
	Jin, HB; Wu, YL; Zhou, YF
刊名	PHYSICAL REVIEW D
	2015
卷号	92 期号:5 页码:55027
通讯作者	Jin, HB (reprint author), State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
合作状况	国内
英文摘要	The first measurement on the antiproton to proton ratio by the AMS-02 collaboration agrees with the expectation from conventional cosmic-ray secondaries in the kinetic energy range similar to 20-100 GeV, which can be turned into stringent upper limits on the annihilation cross sections of dark matter (DM) above similar to 300 GeV. Using the GALPROP code, we derive the upper limits in various propagation models and DM profiles. We show that in the "conventional" propagation model, for the q (q) over bar, b (b) over bar, and W+W- final states, the constraints could be more stringent than that derived from the recent Ferm-LAT gamma-ray data on the dwarf spheroidal satellite galaxies. Making use of the typical minimal, median, and maximal models obtained from a previous GALPROP-based global fit to the preliminary AMS-02 data, we show that the variation of the upper limits is about a factor of five. The possibility of DM contributions to the low and very high energy (p) over bar /p data is discussed.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	COSMIC-RAY PROPAGATION ; DENSITY ; TRANSPORT ; NUCLEI ; GALAXY
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21249]
专题	计算平台成果
推荐引用方式 GB/T 7714	Jin, HB,Wu, YL,Zhou, YF. Upper limits on dark matter annihilation cross sections from the first AMS-02 antiproton data[J]. PHYSICAL REVIEW D,2015,92(5):55027.
APA	Jin, HB,Wu, YL,&Zhou, YF.(2015).Upper limits on dark matter annihilation cross sections from the first AMS-02 antiproton data.PHYSICAL REVIEW D,92(5),55027.
MLA	Jin, HB,et al."Upper limits on dark matter annihilation cross sections from the first AMS-02 antiproton data".PHYSICAL REVIEW D 92.5(2015):55027.