Muon anomalous magnetic moment in the excited fermion paradigm
Physical Review D
Doi 10.1103/PhysRevD.111.095006
Volumen 111
2025-05-01
Citas: 0
© 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the ''https://creativecommons.org/licenses/by/4.0/''Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.Extensions of the standard model featuring excited fermions present an interesting framework that motivates the search for exotic particles at the LHC. Additionally, these extensions offer potential explanations for the muon's anomalous magnetic moment and other precision observables, shedding light on the energy scale and key parameters of the new theory. Our analysis focuses on the one-loop radiative correction originating from excited lepton doublet and triplet states using the effective Lagrangian approach. The bounds derived from the (g-2)? anomaly can be complemented with the ones arising from other observables, like the electroweak precision observable ?? and the signals from direct LHC searches to constrain the effective theory. Our results suggest that the (g-2)? anomaly can be addressed within a very narrow region of the effective theory scale. Consequently, this imposes indirect constraints on the parameter space of excited fermions.
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