Charm Physics Confronts High-$p_T$ Lepton Tails

Understand

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 $K$, $\pi$ and $\tau$ decays imposed by $SU(2)_L$ gauge invariance is considered.