A $B-$anomaly motivated $Z^\prime$ boson at the energy and precision frontiers
Abstract
TeV-scale bosons with family-dependent couplings can explain some anomalies inferred from meson measurements of processes involving the transition. A originating from kinetically-mixed spontaneously broken gauge symmetry has been shown to greatly ameliorate global fits~\cite{Allanach:2024ozu} in a `flavour-preferred' region of parameter space. We provide an exploration of this region at the high luminosity (HL-)LHC with particular attention to which signals could be verified across different discovery modes. Even if the HL-LHC does not discover the boson in a resonant di-lepton channel, a FCC-ee -pole run would detect oblique corrections to the electroweak precision observables (EWPOs). Changes due to -induced non-oblique corrections are unlikely to be detected, to within experimental precision. In any case, the extended discovery potential offered by a 100 TeV collider would afford sensitivity to the entire flavour-preferred region and enable a fine-grained and forensic analysis of the~model.
Cite
@article{arxiv.2503.21319,
title = {A $B-$anomaly motivated $Z^\prime$ boson at the energy and precision frontiers},
author = {Ben Allanach and Christoph Englert and Wrishik Naskar},
journal= {arXiv preprint arXiv:2503.21319},
year = {2025}
}
Comments
20 Pages, 9 figures, 2 tables, author final version published at Physics Letters B