# Interactions relevant to the decoupling of the neutrini/antineutrini in the early Universe

## TL;DR

This paper provides detailed calculations of neutrino and antineutrino interaction cross sections relevant to early Universe and compact star physics, addressing discrepancies in existing literature.

## Contribution

It offers reliable expressions for differential and total cross sections of neutrino interactions, clarifying previous inconsistencies.

## Key findings

- Derived new cross section formulas using standard methods
- Resolved discrepancies in existing literature
- Enhanced accuracy for early Universe simulations

## Abstract

The interactions of the neutrini and antineutrini amongst themselves, as well as the interactions of these particles with the electrons and the positrons, are of interest in simulations of the early Universe and in studies of the processes involving compact stars. The objective in this paper is to create a reliable source of information regarding the differential and total cross sections of these interactions; expressions for these observables will be obtained using standard methodology. A number of relevant discrepancies in the literature will be addressed.