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arXiv 1802.08282hep-phastro-ph.HEnucl-th
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测试中子星中重子的暗衰变

Testing dark decays of baryons in neutron stars

Gordon Baym, D. H. Beck, Peter Geltenbort, Jessie Shelton

摘要:

我们表明,观察质量大于一个太阳质量的中子星放置任何外来的中子衰变模式,可以解释之间的差异束和瓶测量的中子寿命的严格要求。如果中子可以衰变为稳定的、弱相互作用的暗费米子,那么中子星的最大可能质量是0.7个太阳质量,而所有测量良好的中子星质量都超过一个太阳质量。因此,$2 M_\odot$中子星的存在表明,任何超越标准模型的中子寿命之谜的解释都需要暗物质是具有高度约束相互作用的多粒子暗扇区的一部分。

英文摘要:

We demonstrate that the observation of neutron stars with masses greater than one solar mass places severe demands on any exotic neutron decay mode that could explain the discrepancy between beam and bottle measurements of the neutron lifetime. If the neutron can decay to a stable, feebly-interacting dark fermion, the maximum possible mass of a neutron star is 0.7 solar masses, while all well-measured neutron star masses exceed one solar mass. The survival of $2 M_\odot$ neutron stars therefore indicates that any explanation beyond the Standard Model for the neutron lifetime puzzle requires dark matter to be part of a multi-particle dark sector with highly constrained interactions.

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