Analysis of experimental data on neutron decay for the possibility of the existence of the right vector boson $W_R$

TL;DR

This paper analyzes recent neutron decay data within a left-right symmetric model, suggesting the possible existence of a right vector boson $W_R$ with specific mass and mixing parameters, and explores implications for CP violation and baryon asymmetry.

Contribution

It provides evidence for a right vector boson $W_R$ with specific mass and mixing angle, and links neutron decay data to CP violation and baryon asymmetry within the left-right symmetric model.

Findings

Indication of $W_R$ with mass ~304 GeV and mixing angle ~-0.039

Compatibility of $W_R$ parameters with collider experiments

Description of CP violation effects in meson decays using derived parameters

Abstract

The analysis of the latest most accurate experimental data on neutron decay for the possibility of the existence of the right vector boson $W_R$ is carried out. As a result of the analysis within the framework of the left-right symmetric model, it was found that there is an indication of the existence of the right vector boson $W_R$ with a mass of $M_{W_R}=304_{-20}^{+24} \text{GeV}$, and a mixing angle with $W_L: \zeta = -0.039\pm 0.014$. It is shown that this result does not contradict the experiments at colliders to search for a hypothetical vector boson. In addition, it is shown that it is possible to describe the effects of CP violation in decays of neutral $K$-mesons, $D$-mesons and $B_s^0$ using the parameters of the extended left-right symmetric model obtained from neutron decay, i.e. squared masses of the left and right bosons ratio and the mixing angle. The formation of baryon-lepton asymmetry of the Universe is considered within the framework of the left-right model of weak interaction with CP violation. A new experimental design for measuring neutron decay asymmetries with increased accuracy is presented.