论文标题
天体中的暗物质捕获：轻型介质，自我互动和与直接检测的互补性
Dark matter capture in celestial objects: light mediators, self-interactions, and complementarity with direct detection
论文作者
论文摘要
我们概括了天体中DM捕获的形式主义，以解释任意介体质量，并从中子星的观察结果中更新对DM核苷散射横截面的现有和预测的天体物理约束。我们表明，DM核子相互作用强度上的天体物理约束，被认为是最严格的，对于轻介质而言最严格，急剧削弱，可以完全掩盖。对于非对称DM，现有的天体物理限制因较轻的介体被完全洗净，而对于5 meV的介体，对于歼灭DM，投影的约束将被洗净，用于较轻的介体，比0.25 meV更轻。相关的陆地直接检测范围也会减弱，但以互补的方式削弱。它们分别取代了小型或大型DM质量的天体物理捕获边界，分别用于非对称或歼灭DM。 DM的排斥性自我互动对总捕获率有微不足道的影响，但对黑洞形成标准产生了重大影响。这进一步削弱了不对称自我抑制DM的DM核电相互作用强度的限制，而对于歼灭自我延误DM的限制仍然没有改变。我们使用新形成的黑洞的正确鹰蒸发率，在先前的研究中被近似为黑体，并表明，尽管更广泛地缓解了崩溃的崩溃，但对中子星星崩溃的观察可以探索广泛的DM自我互动强度。
We generalize the formalism for DM capture in celestial bodies to account for arbitrary mediator mass, and update the existing and projected astrophysical constraints on DM-nucleon scattering cross section from observations of neutron stars. We show that the astrophysical constraints on the DM-nucleon interaction strength, that were thought to be the most stringent, drastically weaken for light mediators and can be completely voided. For asymmetric DM, existing astrophysical constraints are completely washed out for mediators lighter than 5 MeV, and for annihilating DM the projected constraints are washed out for mediators lighter than 0.25 MeV. Related terrestrial direct detection bounds also weaken, but in a complementary fashion; they supersede the astrophysical capture bounds for small or large DM mass, respectively for asymmetric or annihilating DM. Repulsive self-interactions of DM have an insignificant impact on the total capture rate, but a significant impact on the black hole formation criterion. This further weakens the constraints on DM-nucleon interaction strength for asymmetric self-repelling DM, whereas constraints remain unaltered for annihilating self-repelling DM. We use the correct Hawking evaporation rate of the newly formed black hole, that was approximated as a blackbody in previous studies, and show that, despite a more extensive alleviation of collapse as a result, the observation of a neutron star collapse can probe a wide range of DM self-interaction strengths.
