论文标题
从宇宙射线相互作用和外来来源重新评估宇宙抗ideuteron通量
Reevaluation of the cosmic antideuteron flux from cosmic-ray interactions and from exotic sources
论文作者
论文摘要
宇宙 - 射线抗想症可能是在我们的银河系中发现外来现象的关键，例如深色 - 物质歼灭或原始的黑洞蒸发。不幸的是，地球上抗抑郁通量的理论预测受到了银河系中抗ideuteron产生和传播机制的不确定性的困扰。我们介绍了与星际培养基和外来过程中宇宙射线碰撞的抗抑郁通量的最新计算。我们首次包括抗抑郁剂弹性相互作用横截面，该横截面最近通过爱丽丝协作（Alice Collaporation）测量，以说明传播过程中抗iduterons的损失。为了括起预期通量的不确定性，我们考虑了几种抗tideuteron生产和宇宙射线传播的最新模型。
Cosmic-ray antideuterons could be a key for the discovery of exotic phenomena in our Galaxy, such as dark-matter annihilations or primordial black hole evaporation. Unfortunately the theoretical predictions of the antideuteron flux at Earth are plagued with uncertainties from the mechanism of antideuteron production and propagation in the Galaxy. We present the most up-to-date calculation of the antideuteron fluxes from cosmic-ray collisions with the interstellar medium and from exotic processes. We include for the first time the antideuteron inelastic interaction cross section recently measured by the ALICE collaboration to account for the loss of antideuterons during propagation. In order to bracket the uncertainty in the expected fluxes, we consider several state-of-the-art models of antideuteron production and of cosmic-ray propagation.
