Neutrino photoproduction on pseudo Nambu-Goldstone bosons

TL;DR

This paper analytically investigates neutrino production via photon interactions with pseudo Nambu-Goldstone bosons within the Standard Model, highlighting potential enhancements in hot, dense environments relevant to astrophysics and heavy-ion collisions.

Contribution

It provides the first analytical calculation of neutrino production cross sections involving pseudo Nambu-Goldstone bosons and explores in-medium effects on neutrino emissivity.

Findings

Neutrino production cross sections are derived analytically.

Neutrino emissivity can be significantly increased in hot, dense matter.

Implications for astrophysics and heavy-ion collision phenomenology are discussed.

Abstract

Production of single neutrinos as well as neutrino-antineutrino pairs by photons interacting with pseudo Nambu-Goldstone bosons is studied within the Standard Model. The corresponding cross sections are found analytically. The energy loss due to neutrino emission in a thermal plasma of photons and pions is calculated. It is shown that the obtained neutrino emissivity may be significantly enhanced in hot and dense matter due to in-medium modification of the pion decay constant. Phenomenological consequences for ultrarelativistic heavy-ion collisions and astrophysics are discussed.