Charge-conjugation violating neutrino interactions in supernovae

Abstract

The well known charge conjugation violating interactions in the Standard Model increase neutrino- and decrease anti-neutrino- nucleon cross sections. This impacts neutrino transport in core collapse supernovae through "recoil" corrections of order the neutrino energy $k$ over the nucleon mass $M$. All $k/M$ corrections to neutrino transport deep inside a protoneutron star are calculated from angular integrals of the Boltzmann equation. We find these corrections significantly modify neutrino currents at high temperatures. This produces a large mu and tau number for the protoneutron star and can change the ratio of neutrons to protons. In addition, the relative size of neutrino mean free paths changes. At high temperatures, the electron anti-neutrino mean free path becomes {\it longer} than that for mu or tau neutrinos.

arXiv comment14 pages, 2 included ps figures, subm. to Phys. Rev. D

References in corpus (5)

• Neutrino Interactions in Hot and Dense Matter
• Cumulative Parity Violation in Supernovae
• Nucleosynthesis in Supernovae
• Macroscopic Parity Violation and Supernova Asymmetries
• The Mu and Tau Number of Supernovae

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• Nuclear pasta and supernova neutrinos at late times
• Impact of medium modification of the nucleon weak and electromagnetic form factors on the neutrino mean free path in dense matter
• Neutrino scattering in supernovae and spin correlations of a unitary gas