Rare D Decays

TL;DR

This paper reviews recent measurements of rare charmed hadron decays, emphasizing their potential to reveal new physics and comparing various experimental techniques across different collider environments.

Contribution

It provides a comprehensive comparison of measurement methods and sensitivities in rare charm decay studies, highlighting their implications for new physics searches.

Findings

Radiative and annihilation decay channels are sensitive to new physics.

Different experimental setups have unique strengths and weaknesses.

Comparisons with beauty, strange, and top systems offer broader context.

Abstract

We discuss several recent measurements of rare charmed hadron decays. Focus is placed on radiative and annihilation topologies highlighting their sensitivity to new physics and pointing out the strengths and weaknesses of different channels. We compare the different measurement techniques employed at fixed target and $e^+e^-$ dedicated charm experiments, B-factories, and the Tevatron experiments. Comparisons are also made to similar topologies in the beauty, strange, and top systems where appropriate.