$W$ boson mass tension caused by its right-handed gauge coupling at high energies?

TL;DR

This paper explores how a non-trivial right-handed gauge coupling at high energies could resolve the discrepancy in the measured $W$ boson mass, suggesting new physics involving composite particles and symmetry restoration at TeV scales.

Contribution

It proposes a mechanism where right-handed gauge couplings induced by four-fermion interactions at TeV scales explain the $W$ mass tension, incorporating composite particles and symmetry considerations.

Findings

Right-handed gauge couplings can account for the $W$ mass discrepancy.

Corrections to $W$ and $Z$ boson properties are consistent with measurements.

Composite particles and symmetry restoration are viable at TeV energies.

Abstract

The CDF collaboration's recent high-precision measurement of the $W$mass is in $7.0~\sigma$ disagreement with the Standard Model expectation. This tension will be relieved if the $W$ boson has a non-trivial right-handed gauge coupling at high energies. At TeV scales, the SM gauge symmetric four-fermion interactions induce a right-handed gauge coupling, and SM fermions compose massive composite particles. We investigate the top-quark mass produced by spontaneous symmetry breaking and compute the $W$ and $Z$ boson propagators and decays. The right-handed coupling corrections to their masses and widths are consistent with experimental measurements. We discuss how SM gauge bosons and composite particles can restore parity-preserving gauge symmetries at TeV scales.