Flavor Changing Neutral Currents in Charm Sector

TL;DR

This paper reviews the potential of charm sector flavor changing neutral currents (FCNC) to reveal new physics beyond the Standard Model, focusing on D0-D0bar mixing and rare D decays as probes.

Contribution

It provides a comparative analysis of FCNC expectations in the Standard Model and new physics scenarios, highlighting the charm sector's unique opportunities.

Findings

Charm FCNC processes are sensitive probes of new physics.

D0-D0bar mixing and rare D decays can reveal insights into fermion mass origins.

The charm sector offers a promising window for beyond Standard Model physics.

Abstract

I would like to discuss $D^0-\bar{D}^0$ the mixing and rare D decays as manifestations of Flavor Changing Neutral Currents (FCNC) in the charm sector. I will first review the expectations in the Standard Model (SM) and then summarize some typical expectations in new physics scenarios. I would like to argue that the charm case offers a large window of opportunity and it may be possible to learn something about the origin of the fermion mass matrix.