High-energy frontier of the muon g-2 at a muon collider

Abstract

The long-standing muon g-2 anomaly can be explained by heavy new physics particles through chirally enhanced contributions. It has been recently proposed that a muon collider running at center-of-mass energies of several TeV could test these new physics scenarios in a model-independent way, through the study of high-energy processes such as mu+ mu- --> h gamma. In this work, we validate these findings, based on effective field theories, by considering selected renormalizable simplified models and by computing this one-loop process in full generality. Furthermore, we explore the interplay of direct and indirect high-energy searches to pin down the details of the underlying new physics model accommodating the muon g-2 anomaly.

19 pages, 8 figures. v2: minor modifications, accepted for publication in Physical Review D. Mathematica notebook with general expressions for the mu+ mu- --> h gamma amplitude added as an ancillary file

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Cited by in corpus (4)

• Global Fit of Modified Quark Couplings to EW Gauge Bosons and Vector-Like Quarks in Light of the Cabibbo Angle Anomaly
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• On the EFT validity for Drell-Yan tails at the LHC
• Probing Higgs and Top Interactions through the Muon Lens at multi-TeV Muon Colliders