论文标题
$δ（1232）$共振的超新星斧头发射率在重手性扰动理论中
Supernova Axion Emissivity with $Δ(1232)$ Resonance in Heavy Baryon Chiral Perturbation Theory
论文作者
论文摘要
在本文中，我们第一次评估了由轴承发射过程$π^ - + p \ to n + a $诱导的超新星的能量损失率，并首次使用$δ（1232）$共振。给定轴突 - 核子 - $δ$互动，我们将先前忽略的$δ$介导图包括到$π^ - + p \ to n + a $过程中。特别是，当茶中心和质子接近$δ（1232）$质量时，$δ^0 $介导的图可以给超新星轴的发射速率产生共振的贡献。有了这些新的贡献，我们发现，对于典型的超新星温度，与早期与轴核（和斧头 - 刺激 - 核子接触）的工作相比，可以通过$ \ sim $ 4（2）在Kim-Shifman-vainshtein-Zakharov模型中提高$ \ sim $ 4（2）的$ \ sim $ 4（2）。用小$ \tanβ$值的Din-Fischler-Srednicki-Zhitnitsky模型。值得注意的是，我们注意到$δ（1232）$共振为高超新星温度下的超新星轴支发射率做出了破坏性的贡献，这是这项研究的非平凡结果。
In this paper, we evaluate the energy loss rate of supernovae induced by the axion emission process $π^- + p \to n + a$ with the $Δ(1232)$ resonance in the heavy baryon chiral perturbation theory for the first time. Given the axion-nucleon-$Δ$ interactions, we include the previously ignored $Δ$-mediated graphs to the $π^- + p \to n + a$ process. In particular, the $Δ^0$-mediated diagram can give a resonance contribution to the supernova axion emission rate when the center-of-mass energy of the pion and proton approaches the $Δ(1232)$ mass. With these new contributions, we find that for the typical supernova temperatures, compared with the earlier work with the axion-nucleon (and axion-pion-nucleon contact) interactions, the supernova axion emissivity can be enhanced by a factor of $\sim$4(2) in the Kim-Shifman-Vainshtein-Zakharov model and up to a factor of $\sim$5(2) in the Dine-Fischler-Srednicki-Zhitnitsky model with small $\tanβ$ values. Remarkably, we notice that the $Δ(1232)$ resonance gives a destructive contribution to the supernova axion emission rate at high supernova temperatures, which is a nontrivial result in this study.
