Understanding the background in dark matter searches by studying antinucleosynthesis in the laboratory with ALICE

S. Hornung
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Abstract

Antinuclei are considered to be one of the most promising probes in the indirect search for dark matter (DM) annihilation in space. However, in light of recent results on the production of light antinuclei in pp collisions at the LHC, an abundant production of light (anti)nuclei is also expected from Standard Model (SM) collisions of primary cosmic rays with the interstellar medium. Hence further precise measurements are required to constrain the production models of antinuclei in SM collisions to be sensitive to additional DM annihilation events. The most recent results of the ALICE collaboration on the production of antideuterons ($\overline{\mathrm{d}}$) and antihelium-3 ($^3\overline{\text{He}}$) in proton-proton (pp) and proton-lead (p--Pb) collisions are shown. These results provide valuable input for state-of-the-art calculations of the production models currently used to estimate the SM background to DM searches.
利用ALICE在实验室研究反核合成,了解暗物质搜索的背景
反核被认为是在太空中间接寻找暗物质湮灭的最有前途的探测器之一。然而,根据最近在大型强子对撞机的pp碰撞中产生的轻反核的结果,也期望从宇宙射线与星际介质的标准模型(SM)碰撞中产生大量的光(反)核。因此,需要进一步的精确测量来约束SM碰撞中的反核产生模型,使其对附加的DM湮灭事件敏感。在质子-质子(pp)和质子-铅(p- Pb)碰撞中,ALICE合作产生反氘核($\overline{\ mathm {d}}$)和反氦-3 ($^3\overline{\text{He}}$)的最新结果。这些结果为目前用于估计DM搜索的SM背景的生产模型的最先进计算提供了有价值的输入。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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