Determining the Neutral D Mixing Parameters

TL;DR

This paper discusses the formalism and methods for accurately determining the mixing parameters of neutral D mesons, highlighting the importance of CP violation as a potential indicator of New Physics.

Contribution

It introduces a comprehensive method to measure all D meson mixing parameters, including CP violation effects, which is crucial for exploring physics beyond the Standard Model.

Findings

Evidence for D meson mixing has been reported.

A method to determine mixing parameters with arbitrary CP violation is presented.

The formalism aids in distinguishing New Physics signals from Standard Model predictions.

Abstract

Evidence for mixing in the neutral D meson system has recently been reported. Assuming negligible CP violation, non-vanishing width and mass differences between the two neutral D mass eigenstates has been found. Theoretical predictions of these are rather difficult, obscuring detection of New Physics contributions. However, the observation of CP violation in the D system would be a good signal of New Physics. We briefly describe the formalism that describes the neutral D decay and mixing, and present a method to determine all the mixing parameters accurately allowing for arbitrary CP violation.