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题名: Upper limits on dark matter annihilation cross sections from the first AMS-02 antiproton data
作者: Jin, HB;  Wu, YL;  Zhou, YF
刊名: PHYSICAL REVIEW D
出版日期: 2015
卷号: 92, 期号:5, 页码:55027
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.92.055027
通讯作者: Jin, HB (reprint author), State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
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.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: COSMIC-RAY PROPAGATION ;  DENSITY ;  TRANSPORT ;  NUCLEI ;  GALAXY
收录类别: SCI
项目资助者: National Basic Research Program of China (973 Program) [2010CB833000] ;  National Nature Science Foundation of China (NSFC) [10905084, 11335012, 11475237]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20856
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
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.
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