The rare decays of D mesons

TL;DR

This paper explores rare charm meson decays involving flavor-changing processes to search for new physics beyond the Standard Model, analyzing decay mechanisms and the role of light vector mesons.

Contribution

It provides a detailed analysis of dominant decay mechanisms in rare D meson decays and discusses potential signals of new physics in these processes.

Findings

Identification of key decay channels sensitive to new physics

Analysis of the role of light vector mesons in D decays

Assessment of the potential to observe beyond Standard Model effects

Abstract

The flavor changing transitions in the c->u gamma, c->u gamma gamma and c->u l+ l- offer the possibility to search for new physics in the charm sector. We investigate dominant decay mechanisms in the radiative decays D->V gamma, D->P(V) l+ l-, D->gamma gamma and we discuss chances to see physics beyond the standard model in these decays. In addition, we analyze Cabibbo allowed D->K pi gamma decays with nonresonant K pi, and we probe the role of light vector mesons in these decays.