Muons in Supernovae: Implications for the Axion-Muon Coupling.,Physical Review Letters

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Muons in Supernovae: Implications for the Axion-Muon Coupling.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-07-30 , DOI: 10.1103/physrevlett.125.051104
Robert Bollig ₁ , William DeRocco ₂ , Peter W Graham ₂ , Hans-Thomas Janka ₁

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The high temperature and electron degeneracy attained during a supernova allow for the formation of a large muon abundance within the core of the resulting protoneutron star. If new pseudoscalar degrees of freedom have large couplings to the muon, they can be produced by this muon abundance and contribute to the cooling of the star. By generating the largest collection of supernova simulations with muons to date, we show that observations of the cooling rate of SN 1987A place strong constraints on the coupling of axionlike particles to muons, limiting the coupling to

g_{a μ} < 10^{- 8.1} {GeV}^{- 1}

.

中文翻译：

超新星中的μ子：对轴突-μ子耦合的影响。

在超新星过程中达到的高温和电子简并性允许在所得的原质子流星核内形成大量的μ子丰度。如果新的伪标量自由度与μ子具有很大的耦合，则它们可以通过这种μ子丰度产生，并有助于恒星的冷却。通过生成迄今为止最大的含μ子的超新星模拟集合，我们表明，对SN 1987A冷却速率的观测对轴状粒子与μ子的耦合施加了强烈的约束，从而限制了与

G_{一种 μ} < 10^{- 8.1} {GeV}^{- 1个}

。

更新日期：2020-07-30

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