Seminario_CA

Titulo: "Bounds on Lorentz-violating Yukawa couplings via lepton electromagnetic moments "

Resumen:  In the present work, effects from the Lorentz-nonconserving Yukawa sector on the electromagnetic moments of charged leptons are calculated, estimated, and discussed. Following a perturbative approach, explicit expressions of leading contributions are derived and upper bounds on Lorentz violation are estimated from current data on electromagnetic moments. Scenarios regarding the coefficients of Lorentz violation are considered. In a scenario of two-point insertions preserving lepton flavor, the bound on the electron electric dipole moment yields limits as stringent as 10^-27, whereas muon and tau-lepton electromagnetic moments determine bounds as restrictive as 10^-14 and 10^-5, respectively. Another scenario, defined by the assumption that Lorentz-violating Yukawa couplings are Hermitian, leads to less stringent bounds, provided by the muon anomalous magnetic moment, which turn out to be as restrictive as 10^-14.

https://cern.zoom.us/j/94943190670?pwd=TEtseVQ1bEwxanBCeTZFY2lzNzdEdz09