Testing Dark Decays of Baryons in Neutron Stars

被引：71

作者：

Baym, Gordon ^{[1
]}

Beck, D. H. ^{[1
]}

Geltenbort, Peter ^{[2
]}

Shelton, Jessie ^{[1
]}

机构：

[1] Univ Illinois, Dept Phys, 1110 West Green St, Urbana, IL 61801 USA

[2] Inst Max Laue Paul Langevin, 71 Ave Martyrs, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 06期

基金：

美国国家科学基金会;

关键词：

EQUATION-OF-STATE; ULTRACOLD NEUTRONS; SCATTERED NEUTRONS; LIFETIME; TRAP; MATTER;

D O I：

10.1103/PhysRevLett.121.061801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 0.7M(circle dot), while all well-measured neutron star masses exceed one M.. The existence of 2M(circle dot) neutron stars further indicates that any explanation beyond the standard model for the neutron lifetime puzzle requires dark matter to be part of a multiparticle dark sector with highly constrained interactions. Beyond the neutron lifetime puzzle, our results indicate that neutron stars provide unique and useful probes of GeV-scale dark sectors coupled to the standard model via baryon-number-violating interactions.

引用

页数：5

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