Nuclear inelastic scattering effect in supernova neutrino spectra

Oct 12, 2020, 6:15 PM


Oral report Section 5. Neutrino physics and astrophysics. Section 5. Neutrino physics and astrophysics


Vladimir Kondratyev


The neutrino scattering on nuclei in hot and dense matter relevant for core collapse supernovae, neutron star mergers, and proto-neutron stars is considered accounting for magnetization. At finite temperature neutrinos undergo exo- and endo-energetic scattering [1] on nuclei due to the neutral current Gamow-Teller component. The energy transfer cross section in neutrino-nuclon scattering is shown to change from positive to negative values at neutrino energies four times the matter temperature. Effects in neutrino transport and spectra are discussed.
[1] V. N. Kondratyev, et al. // Phys. Rev. C 2019. V. 100, 045802

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