Enhanced cosmic-ray antihelium production from dark matter annihilation through light mediators

doi:10.1088/1475-7516/2023/03/051

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	Enhanced cosmic-ray antihelium production from dark matter annihilation through light mediators
	Ding, Yu-Chen ; Li, Nan 2; Zhou, Yu-Feng
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2023
期号	3
关键词	CROSS-SECTIONS HIGH-ENERGY PROPAGATION KINEMATICS SATELLITE GALAXIES STARS
ISSN号	1475-7516
DOI	10.1088/1475-7516/2023/03/051
英文摘要	Cosmic-ray (CR) antihelium is an important probe for the indirect search of dark matter (DM) annihilation in the Galaxy. However, due to stringent constraints from the measurements of CR antiprotons and-y-rays, the flux of CR antihelium from the conventional DM direct annihilation into Standard Model final states is expected to be far below the sensitivity of the current experiments. We show that the production of antihelium can be significantly enhanced if the DM particles annihilate through light mediator particles with a mass mo approximate to 8 GeV close to the antihelium production threshold. After taking into account the constraints from the AMS-02 antiproton data and the Fermi-LAT-y-ray data on the spheroidal dwarf galaxies, we find that in this scenario the CR antihelium flux can be enhanced by three orders of magnitude, which makes it within the sensitivity of the ongoing AMS-02 experiment.
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/311006/27972]
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.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Accelerat Phys & Technol, Beijing 100049, Peoples R China 4.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 5.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ding, Yu-Chen,Li, Nan,Zhou, Yu-Feng. Enhanced cosmic-ray antihelium production from dark matter annihilation through light mediators[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2023(3).
APA	Ding, Yu-Chen,Li, Nan,&Zhou, Yu-Feng.(2023).Enhanced cosmic-ray antihelium production from dark matter annihilation through light mediators.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3).
MLA	Ding, Yu-Chen,et al."Enhanced cosmic-ray antihelium production from dark matter annihilation through light mediators".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2023).