Gamma ray signals from cosmic ray scattering on axionlike particles

Gamma ray signals from cosmic ray scattering on axionlike particles
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来自轴子粒子上的宇宙射线散射的伽马射线信号

DOI:
10.1103/physrevd.104.055044
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发表时间:
2021
期刊:
影响因子:
5
通讯作者:
Arellano, Natalia Tapia
Arellano, Natalia Tapia
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Dent, James B.;Dutta, Bhaskar;Newstead, Jayden L.;Rodriguez, Alejandro;Shoemaker, Ian M.;Tabrizi, Zahra;Arellano, Natalia Tapia

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暗物质(DM)可能由与光子和标准模型费米子耦合的轴子粒子(ALP)组成。在本文中,我们研究了背景 ALP 上的宇宙射线 (CR) 电子散射产生的光子信号。对于一系列质量,我们发现这些界限可以对 ALP-电子耦合施加竞争性的新约束,尽管在许多模型中寿命约束可能会取代这些界限。除了当前的费米约束之外,我们还考虑未来的电子星图边界,它将对 ALP-CR 诱导的伽马射线具有更大的敏感性。
Dark matter (DM) may be comprised of axionlike particles (ALPs) with couplings to photons and the standard model fermions. In this paper, we study photon signals arising from cosmic ray (CR) electron scattering on background ALPs. For a range of masses we find that these bounds can place competitive new constraints on the ALP-electron coupling, although in many models lifetime constraints may supersede these bounds. In addition to current Fermi constraints, we also consider future e-Astrogram bounds which will have greater sensitivity to ALP-CR induced gamma-rays.
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