Open AccessRelic neutrinos distribution function at low coordinate momentums
Author(s) -
Vlad Yu. Yurchenko,
A. V. Ivanchik
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.170
Subject(s) - neutrino , physics , thermalisation , distribution function , electron , distribution (mathematics) , boltzmann equation , function (biology) , kinetic energy , particle physics , nuclear physics , atomic physics , classical mechanics , quantum mechanics , mathematics , mathematical analysis , evolutionary biology , biology
The eect of processes p + e − → n + ν e and µ + → e + + ν̃ µ + ν e on relic neutrino distribution function in the region ofsmall coordinate momentums is studied. The Boltzmann kinetic equation on the electron neutrino distribution function issolved in this region at temperatures above 10 MeV taking into account generation of electron neutrinos due to the aboveprocesses in the assumption that at these temperatures neutrinos of larger momentums are thermalized instantaneously.The eect of thermalization of neutrinos due to their scattering on electrons and positrons on the distribution function inthis region at temperatures lesser than 10 MeV is examined.