arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2312.03349hep-ph
收藏

引力波作为轻子弱相互作用暗物质的探针

Gravitational Wave as a Probe of Light Feebly Interacting Dark Matter

Yuchao Gu, Liangliang Su, Lei Wu, Yongcheng Wu, Bin Zhu

AI总结:

本研究提出通过原初引力波谱中的扭折特征探测轻子弱相互作用暗物质,发现熵稀释机制产生的谱扭折频率与暗物质质量相关,CE和BBO等探测器可测量此特征,为暗物质探测提供新途径。

摘要:

轻子弱相互作用暗物质在众多新物理模型中被广泛预言。然而,由于与标准模型粒子的耦合极弱,其通过相对论性热退耦过程产生的遗迹密度很容易超过观测值。早期物质主导时代的熵稀释为解决这种过剩问题提供了一个有吸引力的机制。在本研究中,我们注意到这种暗物质稀释机制将在原初引力波谱中导致两个独特的扭折,其频率与暗物质质量强烈相关。我们表明,诸如宇宙探索者(CE)和大爆炸观测者(BBO)等引力波探测器可以测量原初引力波谱中的扭折,并将为探测轻子弱相互作用暗物质提供一条新途径。

英文摘要:

Light feebly interacting dark matter is widely predicted in a plethora of new physics models. However, due to very feeble couplings with the Standard Model particles, its relic density produced via the relativistic thermal freeze-out process easily exceeds the observed value. The entropy dilution in an early matter-dominated era provides an attractive mechanism for solving such an overabundance problem. In this work, we note that this dark matter dilution mechanism will lead to two distinctive kinks in the primordial GW spectrum, whose frequencies strongly correlate with the DM mass. We show that the GW detectors, such as Cosmic Explorer (CE) and Big Bang Observer (BBO), can measure the kinks in the primordial GW spectrum and will offer a new avenue to probe light feebly interacting dark matter.

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。

↑