Anomaly induced cooling of Neutron Stars: A Standard Model contribution

Understand

Young neutron stars cool via the emission of neutrinos from their core.

• A precise understanding of all the different processes producing neutrinos in the hot and degenerate matter is essential for assessing the cooling rate of such stars.
• The main Standard Model processes contributing to this effect are $\nu$ bremsstrahlung, mURCA among others.
• In this paper, we investigate another Standard Model process initiated by the Wess-Zumino-Witten term, leading to the emission of neutrino pairs via $N\gamma\to N\nu\bar\nu$.