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arXiv 1302.4034hep-ph
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自旋为3/2的单态粒子作为暗物质候选者的综合限制

Comprehensive Constraints on a Spin-3/2 Singlet Particle as a Dark Matter Candidate

Ran Ding, Yi Liao, Ji-Yuan Liu, Kai Wang

摘要:

我们考虑的建议,暗物质(DM)是由自旋3/2的粒子,是一个单态的标准模型(SM)。它与普通物质的主要有效相互作用涉及一对它们的场和一对SM费米子,以手征流的产物的形式。我们对各种实验和观测中相互作用可能产生的唯象效应进行了全面的分析。其中包括对撞机搜索单喷流加上失踪的横向能量事件,直接检测DM散射的核,可能的影响,伽马射线和反质子-质子流量比在宇宙射线,和观察到的遗迹密度。目前的数据已经以互补的方式对有效的相互作用设置了强有力的限制。对撞机搜索的约束是最有效的DM在一个相对较低的质量,和反质子通量比提供了最好的绑定一个沉重的DM,而自旋无关的直接检测是最好的。对于10 GeV到1 TeV量级的DM质量,有效相互作用尺度被限制为通常在几十TeV以上。

英文摘要:

We consider the proposal that dark matter (DM) is composed of a spin-3/2 particle that is a singlet of the standard model (SM). Its leading effective interactions with ordinary matter involve a pair of their fields and a pair of SM fermions, in the form of products of chiral currents. We make a comprehensive analysis on possible phenomenological effects of the interactions in various experiments and observations. These include collider searches for monojet plus missing transverse energy events, direct detections of DM scattering off nuclei, possible impacts on the gamma rays and antiproton-to-proton flux ratio in cosmic rays, and the observed relic density. The current data already set strong constraints on the effective interactions in a complementary manner. The constraint from collider searches is most effective at a relatively low mass of DM, and the antiproton-to-proton flux ratio offers the best bound for a heavy DM, while the spin-independent direct detection is the best in between. For DM mass of order 10 GeV to 1 TeV, the effective interaction scale is constrained to be typically above a few tens TeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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