New constraint from supernova explosions on light particles beyond the Standard Model
New constraint from supernova explosions on light particles beyond the Standard Model
复制标题
超新星爆炸对轻粒子的新约束超出了标准模型
DOI：
10.1103/physrevd.99.121305
复制
发表时间：
2019
影响因子：
5
通讯作者：
Meng
中科院分区：
文献类型：
--
作者：
A. Sung;H. Tu;Meng
我们提出了对标准模型之外的光（亚GeV）粒子的新约束，这些粒子可以在核心塌缩超新星爆炸产生的原中子星核心内部产生。它是通过要求转移到祖恒星包层的奇异粒子携带的能量不得超过观测到的超新星的爆炸能量 $\lesssim 2\cdot 10^{51}$~erg 得出的。我们特别表明，对于暗光子与 SM 光子动力学混合并主要衰变为 $e^\pm$ 对的情况，可以排除比公认的超新星冷却界限低一个数量级的较小混合参数。此外，我们的边界填补了冷却边界和由超新星产生的 $\gamma$ 射线（对于比 $\sim 20$~MeV 轻的暗光子）进行（非）观测所约束的区域之间的间隙。
We propose a new constraint on light (sub-GeV) particles beyond the Standard Model that can be produced inside the proto-neutron star core resulting from the core-collapse supernova explosion. It is derived by demanding that the energy carried by exotic particles being transferred to the progenitor stellar envelopes must not exceed the explosion energy of $\lesssim 2\cdot 10^{51}$~erg of observed supernovae. We show specifically that for the case of dark photon which kinetically mixes with the SM photon and decays predominantly to an $e^\pm$ pair, smaller mixing parameter of one order of magnitude below the well-established supernova cooling bound can be excluded. Furthermore, our bound fills the gap between the cooling bound and the region constrained by (non-)observation of $\gamma$-rays produced from supernovae for dark photon lighter than $\sim 20$~MeV.
影响因子：
5
作者：
C. Arguelles;V. Brdar;J. Kopp
通讯作者：
C. Arguelles;V. Brdar;J. Kopp