Journal article

Hadron collider sensitivity to fat flavourful Z's for R-K(*)

BC Allanach, Tyler Corbett, Matthew J Dolan, Tevong You



We further investigate the case where new physics in the form of a massive Z ′ particle explains apparent measurements of lepton flavour non-universality in B → K ( * ) l + l − decays. Hadron collider sensitivities for direct production of such Z ′ s have been previously studied in the narrow width limit for a μ + μ − final state. Here, we extend the analysis to sizeable decay widths and improve the sensitivity estimate for the narrow width case. We estimate the sensitivities of the high luminosity 14 TeV Large Hadron Collider (HL-LHC), a high energy 27 TeV LHC (HE-LHC), as well as a potential 100 TeV future circular collider (FCC). The HL-LHC has sensitivity to narrow Z ′ resonances consist..

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University of Melbourne Researchers


Awarded by STFC consolidated grant

Funding Acknowledgements

We thank other members of the Cambridge SUSY Working Group and A Greljo for helpful advice and comments and M Mangano for suggesting the project. This work has been partially supported by STFC consolidated grant ST/P000681/1. TY is supported by a Branco Weiss Society in Science Fellowship and a Research Fellowship from Gonville and Caius College, Cambridge. TC and MJD are supported by the Australian Research Council.