Azimuthal asymmetry in cosmic-ray boosted dark matter flux

doi:10.1103/PhysRevD.107.055012

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	Azimuthal asymmetry in cosmic-ray boosted dark matter flux
	Xia, Chen ; Xu, Yan-Hao ; Zhou, Yu-Feng
刊名	PHYSICAL REVIEW D
	2023
卷号	107 期号:5 页码:55012
关键词	PROPAGATION MODELS ANTIPROTONS CONSTRAINTS GALAXY
ISSN号	2470-0010
DOI	10.1103/PhysRevD.107.055012
英文摘要	Light halo dark matter (DM) particles up-scattered by high-energy cosmic rays (referred to as CRDM) can be energetic and become detectable at conventional DM and neutrino experiments. We show that the CRDM flux has a novel and detectable morphological feature. Unlike most of the recently proposed boosted DM models, which predict azimuthally symmetric DM fluxes around the Galactic Center, the CRDM flux breaks the azimuthal symmetry significantly. Using cosmic-ray electron distribution in the whole Galaxy and optimized search region in the sky according to the morphology of the CRDM flux, we derive, so far, the most stringent constraints on the DM-electron scattering cross section from the SuperKamiokande (SK) IV data, which improves the previous constraints from the SK-IV full-sky data by more than an order of magnitude. Based on the improved constraints, we predict that the azimuthal symmetrybreaking effect can be observed in the future Hyper-Kamiokande experiment at similar to 3 sigma level.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27929]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.[Xia, Chen 2.Xu, Yan-Hao 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhongguancun East Rd 55, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys, Yuquan Rd 19, Beijing 100049, Peoples R China 5.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 6.Int Ctr Theoret Phys Asia Pacific Beijing Hangzhou, Yuquan Rd 19, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xia, Chen,Xu, Yan-Hao,Zhou, Yu-Feng. Azimuthal asymmetry in cosmic-ray boosted dark matter flux[J]. PHYSICAL REVIEW D,2023,107(5):55012.
APA	Xia, Chen,Xu, Yan-Hao,&Zhou, Yu-Feng.(2023).Azimuthal asymmetry in cosmic-ray boosted dark matter flux.PHYSICAL REVIEW D,107(5),55012.
MLA	Xia, Chen,et al."Azimuthal asymmetry in cosmic-ray boosted dark matter flux".PHYSICAL REVIEW D 107.5(2023):55012.