New fermions in the light of the (g − 2)μ
Metadatos
Afficher la notice complèteAuteur
Djouadi, AbdelhakEditorial
Frontiers
Materia
Muon (g-2) New fermions Fermilab Review New physics Particle physics Anomalous magnetic and dielectric properties
Date
2022-10-20Referencia bibliográfica
Djouadi A... [et al.] (2022), New fermions in the light of the (g − 2)μ. Front. Phys. 10:964131. doi: [10.3389/fphy.2022.964131]
Patrocinador
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-4314Résumé
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.