Solar neutrinos, helicity effects and new affine gravity with torsion II

TL;DR

This paper analyzes neutrino helicity flip cross sections within a new affine gravity model with torsion, linking it to axion physics and astrophysical observations, revealing potential implications for particle physics and cosmology.

Contribution

It introduces a novel f(R, T) gravity model with torsion to study neutrino helicity effects and connects these results to axion parameters and astrophysical data.

Findings

Helicity flip cross sections depend logarithmically on energy.

Results align with recent axion mass estimations from lattice QCD.

The model links gravitational torsion effects to particle physics phenomena.

Abstract

The cross section for neutrino helicity spin-flip obtained from a new f(R, T) model of gravitation with dynamic torsion field introduced by one of the authors in [1], is phenomenologically analyzed. To this end, due to the logarithmical energy dependence of the cross section, the relation with the axion decay constant fa (Peccei-Quinn parameter) is used. Consequently the link with the phenomenological energy/mass window is found from the astrophysical and high energy viewpoints. The highest helicity spin-flip cross-sectional values presented in this work coincide with a recent estimation on the axion mass computed in [2] in the framework of finite temperature extended lattice QCD and under cosmological considerations.