Neutrino Energy Loss Rates in 3-3-1 Models

TL;DR

This paper calculates neutrino energy loss rates in 3-3-1 models, showing small corrections to the Standard Model and constraining the Z' boson mass within LHC search ranges.

Contribution

It provides the first detailed evaluation of neutrino energy loss rates in 3-3-1 models, including parameter-dependent corrections and constraints on Z' mass.

Findings

Correction to Standard Model rate does not exceed 14%.

Z' boson mass constrained to be less than or equal to 4000 GeV.

Dipole moment contribution is negligible compared to Z' contribution.

Abstract

The stellar energy-loss rates $\mathcal{Q}$ due to the production of neutrino pair in the framework of 3-3-1 models are presented. The energy loss rate $\mathcal{Q}$ is evaluated for different values of $\beta=\pm\fr{1}{\sqrt{3}},\pm\fr{2}{\sqrt{3}},\pm\sqrt{3}$ in which $\beta$ is a parameter used to define the charge operator in the 3-3-1 models. The correction to the rate which is compared with that of the Standard Model ($\de \mathcal{Q}$) is also evaluated. We show that the correction does not exceed 14\% and %is gets the highest with $\beta=-\sqrt{3}$. The contribution of dipole moment to the energy loss rate is small compared to the contribution of new natural gauge boson $Z'$ and this sets constraints for the mass of Z' $m_{Z'} \leq 4000$ GeV. This mass range is within the searching range for $Z'$ boson at LHC.