Regular Article - Theoretical Physics
Large hadron collider constraints on some simple models for anomalies
Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK
2 Department of Physics and Astronomy, University College London, Gower St, WC1E 6BT, London, UK
3 The Niels Bohr International Academy, University of Copenhagen, Blegdamsvej 17, 2100, Copenhagen, Denmark
Accepted: 6 December 2021
Published online: 22 December 2021
We examine current Large Hadron Collider constraints on some simple models that significantly improve on Standard Model fits to transition data. The models that we consider are the ‘third family baryon number minus second family lepton number’ () model and the ‘third family hypercharge’ model and variants. The constraints are applied on parameter regions of each model that fit the transition data and come from high-mass Drell–Yan di-muons and measurements of Standard Model processes. This latter set of observables place particularly strong bounds upon the parameter space of the model when the mass of the boson is less than 300 GeV.
© The Author(s) 2021
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