标题： 利用白矮星初始-终态质量关系约束类轴子粒子 显示英文标题

标题： Constraining axion-like particles using the white dwarf initial-final mass relation

摘要： 轴子样粒子（ALPs），一类在标准模型许多扩展中常见的伪标量粒子，能够从恒星内部消耗能量。 因此，恒星演化可以用来推导出对ALPs的许多限制。 我们研究了仅与光子相互作用的keV-MeV尺度ALPs对渐近巨星分支恒星的氦燃烧壳层的影响，这是初始质量小于$8M_{\odot}$的恒星晚年的演化阶段。 我们建立了最终恒星质量对当前由恒星演化限制所允许的ALPs质量的能量损失的敏感性。 然后，利用来自双白矮星双星观测得出的白矮星初始-最终质量关系（IFMR）的半经验约束，排除了目前未受约束的ALP参数空间区域——宇宙学三角形的一部分。 当ALP的衰变长度短于氦燃烧壳层的宽度时，得出的约束会变得宽松。 还讨论了其他潜在的恒星约束来源。 显示英文摘要

摘要： Axion-like particles (ALPs), a class of pseudoscalars common to many extensions of the Standard Model, have the capacity to drain energy from the interiors of stars. Consequently, stellar evolution can be used to derive many constraints on ALPs. We study the influence that keV-MeV scale ALPs which interact exclusively with photons can exert on the helium-burning shells of asymptotic giant branch stars, the late-life evolutionary phase of stars with initial masses less than $8M_{\odot}$. We establish the sensitivity of the final stellar mass to such energy-loss for ALPs with masses currently permitted by stellar evolution bounds. A semi-empirical constraint on the white dwarf initial-final mass relation (IFMR) derived from observation of double white dwarf binaries is then used to exclude part of a currently unconstrained region of ALP parameter space, the cosmological triangle. The derived constraint relaxes when the ALP decay length becomes shorter than the width of the helium-burning shell. Other potential sources for stellar constraints on ALPs are also discussed.