Regular Article - Theoretical Physics
Hide and seek with the third family hypercharge model’s at the large hadron collider
DAMTP, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK
Accepted: 7 March 2022
Published online: 31 March 2022
The Third Family Hypercharge Model predicts a gauge boson with flavour dependent couplings which has been used to explain anomalies in meson decay processes which involve the transition. The model predicts that a TeV-scale should decay to particle-antiparticle pairs of muons, taus, top quarks and bottom quarks with appreciable branching ratios. We reinterpret various ATLAS and CMS search limits for production followed by such decays at the LHC over a parameter space of the model that results from a successful combined fit to the data and precision electroweak observables. Current exclusions in parameter space and expected sensitivities of the various different channels in the high-luminosity run are compared. We find that the high-luminosity run of the LHC will significantly increase the sensitivity to the model beyond the existing empirical limits, which we find to be surprisingly weak.
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