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arXiv · 2205.14957

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

She-Sheng Xue
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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.

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She-Sheng Xue. 2022-05-30. $W$ boson mass tension caused by its right-handed gauge coupling at high energies?. https://doi.org/10.1016/j.nuclphysb.2022.115992

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