arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1908.00553hep-phastro-ph.HE
收藏

暗扇区-光子相互作用的恒星探测器

Stellar probes of dark sector-photon interactions

Xiaoyong Chu, Jui-Lin Kuo, Josef Pradler, Lukas Semmelrock

摘要:

电磁中性的暗扇区粒子可以通过更高维的有效算子直接耦合到光子。考虑到电和磁偶极矩,Anapole矩,和电荷半径的相互作用,我们推导出恒星的能量损失在太阳,水平分支和红巨星,以及从SN 1987 A的原中子星冷却的限制。我们提供了准确的公式,在介质中的光子介导的对生产的领导秩序在暗耦合,并计算明确的能量损失率最重要的过程,包括仔细讨论的共振和潜在的双重计数的过程之间。质量低于$3\,$ keV暗态的严格限制($40\,$ MeV)起源于红巨星(SN 1987 A),意味着一个约为$10^9\,$ GeV的有效低质量标度($10^7\,$ GeV)对于质量维度5,和$100\,$ GeV($2.5\,$ TeV)的质量维六运营商,只要暗态流自由;对于原中子星,我们还计算了暗态的俘获。连同我们先前在Chu et al.(2018)中推导出的直接限制,这提供了对低于GeV质量尺度的有效电磁暗态相互作用的可行性的第一个全面概述。

英文摘要:

Electromagnetically neutral dark sector particles may directly couple to the photon through higher dimensional effective operators. Considering electric and magnetic dipole moment, anapole moment, and charge radius interactions, we derive constraints from stellar energy loss in the Sun, horizontal branch and red giant stars, as well as from cooling of the proto-neutron star of SN1987A. We provide the exact formula for in-medium photon-mediated pair production to leading order in the dark coupling, and compute the energy loss rates explicitly for the most important processes, including a careful discussion on resonances and potential double counting between the processes. Stringent limits for dark states with masses below $3\,$keV ($40\,$MeV) arise from red giant stars (SN1987A), implying an effective lower mass-scale of approximately $10^9\,$GeV ($10^7\,$GeV) for mass-dimension five, and $100\,$GeV ($2.5\,$TeV) for mass-dimension six operators as long as dark states stream freely; for the proto-neutron star, the trapping of dark states is also evaluated. Together with direct limits previously derived by us in Chu et al. (2018), this provides the first comprehensive overview of the viability of effective electromagnetic dark-state interactions below the GeV mass-scale.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑