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

The final version is to appear in Nuclear Physics B

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• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Illuminating Dark Photons with High-Energy Colliders
• Delta r and the W-boson mass in the Singlet Extension of the Standard Model
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Cited by in corpus (5)

• Re-examining $N_R$-EFT Upto Dimension Six
• Higgs boson origin from a gauge symmetric theory of massive composite particles and massless $W^{\pm }$ and $Z^0$ bosons at the TeV scale
• Searching for exclusive leptoquarks with the Nambu-Jona-Lasinio composite model at the LHC and HL-LHC
• Constraints on NJL four-fermion effective interactions from neutrinoless double beta decay
• Accommodating the CDF W-boson Mass Measurement in the Beautiful Mirror Model