Limits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data
Limits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data
复制标题
皮埃尔俄歇天文台数据中未观测到瞬子诱发的超重暗物质衰变对暗区规范耦合的限制
DOI：
10.1103/physrevlett.130.061001
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发表时间：
2023
影响因子：
8.6
通讯作者：
Ammerman Yebra, J.
中科院分区：
文献类型：
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作者：
Abreu, P.;Aglietta, M.;Albury, J. M.;Allekotte, I.;Almeida Cheminant, K.;Almela, A.;Aloisio, R.;Alvarez-Muñiz, J.;Alves Batista, R.;Ammerman Yebra, J.
瞬子是杨-米尔斯方程的非微扰解，它提供了不同类真空之间量子隧穿发生的信号。它们可以引起粒子的衰变，否则是禁止的。利用皮埃尔俄歇天文台收集的数据，我们寻找这样的瞬子引起的过程，这将是暗示超重粒子在银河系晕衰变的签名。这些粒子可能是在后暴胀时期产生的，与今天推断的暗物质遗迹丰度相匹配。搜索的签名的nonobservation允许我们推导出一个约束的规范相互作用在黑暗的部门减少耦合常数：，为。反之，我们得到，例如，约化耦合常数不包括质量.在仅从引力相互作用产生暗物质的背景下，我们说明了这些边界是如何互补的哈勃率在膨胀结束时从宇宙微波背景中的张量模式的非观测。
Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden. Using data collected at the Pierre Auger Observatory, we search for signatures of such instanton-induced processes that would be suggestive of super-heavy particles decaying in the Galactic halo. These particles could have been produced during the post-inflationary epoch and match the relic abundance of dark matter inferred today. The nonobservation of the signatures searched for allows us to derive a bound on the reduced coupling constant of gauge interactions in the dark sector:, for. Conversely, we obtain that, for instance, a reduced coupling constantexcludes masses. In the context of dark matter production from gravitational interactions alone, we illustrate how these bounds are complementary to those obtained on the Hubble rate at the end of inflation from the nonobservation of tensor modes in the cosmological microwave background.