Speaker
Nikiša Plešec
(Jožef Stefan Institute)
Description
Flavor-changing Higgs interactions are highly suppressed in the Standard Model, making them sensitive probes of new physics. I will present Standard Model calculations relevant to their study: box amplitudes for neutral-meson mixing, one-loop flavor-changing Higgs decays, and $B_s\to\mu^+\mu^-$. Particular attention will be given to gauge independence, ultraviolet cancellations, and matching onto low-energy effective operators. Calculations in both Feynman and unitary gauge provide independent cross-checks. Selected numerical results will be presented, establishing a consistent Standard Model baseline for future constraints on flavor-changing Higgs couplings.
Authors
Jernej F. Kamenik
(Jozef Stefan Institute)
Nikiša Plešec
(Jožef Stefan Institute)