Cosmic-ray upscattered inelastic dark matter,Physical Review D

当前位置： X-MOL 学术 › Phys. Rev. D › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Cosmic-ray upscattered inelastic dark matter
Physical Review D ( IF 4.6 ) Pub Date : 2021-10-21 , DOI: 10.1103/physrevd.104.076020
Nicole F. Bell ₁ , James B. Dent ₂ , Bhaskar Dutta ₃ , Sumit Ghosh ₃ , Jason Kumar ₄ , Jayden L. Newstead ₁ , Ian M. Shoemaker ₅

Affiliation

Light nonrelativistic components of the galactic dark matter halo elude direct detection constraints because they lack the kinetic energy to create an observable recoil. However, cosmic rays can upscatter dark matter to significant energies, giving direct detection experiments access to previously unreachable regions of parameter space at very low dark matter mass. In this work we extend the cosmic-ray dark matter formalism to models of inelastic dark matter and show that previously inaccessible regions of the mass-splitting p arameter space can be probed. Conventional direct detection of nonrelativistic halo dark matter is limited to mass splittings of

δ \sim 10 keV

and is highly mass dependent. We find that including the effect of cosmic-ray upscattering can extend the reach to mass splittings of

δ \sim 100 MeV

and maintain that reach at much lower dark matter mass.

中文翻译：

宇宙射线向上散射的非弹性暗物质

银河暗物质晕的轻的非相对论成分避开了直接探测的限制，因为它们缺乏产生可观察反冲的动能。然而，宇宙射线可以将暗物质向上散射到显着的能量，从而使直接探测实验能够以非常低的暗物质质量进入以前无法到达的参数空间区域。在这项工作中，我们将宇宙射线暗物质形式主义扩展到非弹性暗物质模型，并表明可以探测以前无法进入的质量分裂参数空间区域。非相对论晕暗物质的传统直接探测仅限于质量分裂