太阳中暗光子与$Z'$的产生率及恒星冷却界限
Production rates of dark photons and $Z'$ in the Sun and stellar cooling bounds
AI总结：
本文计算了太阳中多种$U(1)$扩展模型产生的轻规范玻色子（如暗光子）的产生率，发现耦合与光子不一致时抑制消失，并推导了$B-L$、$L_\mu-L_\tau$等模型的恒星冷却界限。
摘要：
轻弱相互作用粒子可能在太阳中大量产生，而太阳作为一颗被充分理解的恒星，能够对此类新物理提供严格的约束。在本工作中，我们计算了由标准模型的多种$U(1)$扩展产生的轻规范玻色子（例如暗光子）的太阳产生率。已知当暗光子质量远低于介质等离子体激元质量时，其产生率会受到暗光子质量的抑制。我们表明，对于更一般的$U(1)$规范玻色子，如果其耦合与光子的耦合不一致，则这种抑制不存在。我们研究了几种经常讨论的$U(1)$模型，包括$B-L$、$L_\mu-L_\tau$和$L_{e}-L_{\mu(\tau)}$，并推导了这些模型的恒星冷却界限。
英文摘要：
Light weakly interacting particles could be copiously produced in the Sun which, as a well-understood star, could provide severe constraints on such new physics. In this work, we calculate the solar production rates of light gauge bosons (e.g. dark photon) arising from various $U(1)$ extensions of the standard model. It is known that the dark photon production rate is suppressed by the dark photon mass if it is well below the plasmon mass of the medium. We show that for more general $U(1)$ gauge bosons, this suppression is absent if the couplings are not in alignment with those of the photon. We investigate a few frequently discussed $U(1)$ models including $B-L$, $L_μ-L_τ$, and $L_{e}-L_{μ(τ)}$, and derive the stellar cooling bounds for these models.
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。
