1. New fermions in the light of the (g − 2)μ
- Author
-
A. Djouadi, J.C. Criado, N. Koivunen, K. Müürsepp, M. Raidal, and H. Veermäe
- Subjects
Muon (g-2) ,Fermilab ,Materials Science (miscellaneous) ,Particle physics ,Anomalous magnetic and dielectric properties ,Biophysics ,New fermions ,General Physics and Astronomy ,Review ,New physics ,Physical and Theoretical Chemistry ,Mathematical Physics - Abstract
The very precise measurement of the anomalous magnetic moment of the muon, recently released by the Muon g-2 experiment at Fermilab, can serve to set stringent constraints on new particles. If the observed 4σ discrepancy from the Standard Model value is indeed real, it will set a tight margin on the scale of the masses and couplings of these particles. Instead, if the discrepancy is simply a result of additional theoretical and experimental uncertainties to be included, strong constraints can be put on their parameters. In this mini-review, we summarize the impact of the latest muon g-2 measurement on new fermions that are predicted by a wide range of new physics models and with exotic quantum numbers and interactions. We will particularly discuss the case of vector-like leptons, excited leptons, and supersymmetric fermions, as well as spin-3/2 isosinglet fermions, which have been advocated recently., Estonian Research Council MOBTTP135 PRG803 MOBTT5 MOBJD323 MOBTT86, European Union through the European Regional Development Fund CoE program TK133, UK Research & Innovation (UKRI), Science & Technology Facilities Council (STFC) ST/P001246/1, Junta de Andalucia, European Commission A-FQM-211-UGR18 P18-FR-4314
- Published
- 2022
- Full Text
- View/download PDF