Charm physics confronts high-pT lepton tails
Javier Fuentes-Martín, Admir Greljo, Jorge Martin Camalich, José David Ruiz-Alvarez
Abstract
A bstract We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to analyze the most relevant experimental data at low and high energies, we demonstrate a striking complementarity between charm decays and high invariant mass lepton tails at the LHC. Interestingly enough, high- p T Drell-Yan data offer competitive constraints on most new physics scenarios. Furthermore, the full set of correlated constraints from K , π and τ decays imposed by SU(2) L gauge invariance is considered. The bounds from D ( s ) decays, high- p T lepton tails and SU(2) L relations chart the space of the SMEFT affecting semi(leptonic) charm flavor transitions.