Nuclear inelastic scattering effect in supernova neutrino spectra

Oct 12, 2020, 6:15 PM
25m
Online

Online

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

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Vladimir Kondratyev

Description

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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