Rare charm decays: an experimental review

TL;DR

This review summarizes the current experimental efforts and constraints in searching for rare charm decays, highlighting their potential to reveal New Physics beyond the Standard Model.

Contribution

It provides a comprehensive overview of recent experimental results on rare charm decays and discusses their implications for New Physics models.

Findings

Current experimental limits constrain New Physics models.

Standard Model rates for rare charm decays remain unobserved.

Growing interest in rare charm decay searches.

Abstract

Indirect searches, and in particular rare decays, have proven to be a fruitful field to search for New Physics beyond the Standard Model. While the down-quark sector (B and K) have been studied in detail, less attention was devoted to charm decays due to the smaller expected values and higher theoretical uncertainties of their observables. Recently a renewed interest is growing in rare charm searches. In this article we review the current experimental status of searches for rare decays in charmed hadrons. While the Standard Model rates are yet to be reached, current experimental limits are already putting constraints on New Physics models.