Measurements of charm rare decays at LHCb

TL;DR

This paper reports recent measurements of rare charm meson decays at LHCb, focusing on flavor-changing neutral currents and lepton flavor violation, providing insights into potential deviations from the Standard Model.

Contribution

It presents new experimental results on rare charm decays, including searches for forbidden processes, enhancing the understanding of flavor physics beyond the Standard Model.

Findings

Constraints on branching fractions of rare decays

No significant deviations observed from Standard Model predictions

Improved limits on lepton flavor violating processes

Abstract

Following the intriguing hints of deviations from the Standard Model in rare B meson decays, searches for rare and forbidden decays of charm hadrons become a hot topic again. We present recent results on Flavour Changing Neutral Current $D^{0}\rightarrow\mu^+ \mu^-$, $D^0 \rightarrow\mu^+\mu^- \pi^+ \pi^-$, $D^{\pm}_{(s)}\rightarrow \pi^{\pm} \mu^+\mu^-$ and LFV $D^{\pm}_{(s)}\rightarrow \pi^{\mp}\mu^{\pm}\mu^{\pm}$ obtained at LHCb.