Comment on ``New Physics Contributions to the Lifetime Difference in $D^0-\bar D^{0}$ mixing''

TL;DR

This paper critiques a previous study by highlighting an overlooked left-right mixing effect in the nonmanifest LR model that impacts the understanding of $D^0-ar D^{0}$ mixing.

Contribution

It identifies a significant LR mixing effect absent in prior analysis, refining the theoretical understanding of charm meson mixing.

Findings

LR mixing effect is important in $D^0-ar D^{0}$ mixing

Previous work omitted this key effect

Refines theoretical models of charm meson mixing

Abstract

We find that in the nonmanifest left-right (LR) model, an important LR mixing effect was not considered in the paper by E. Golowich, S. Pakvasa, and A. Petrov, Phys. Rev. Lett. 98, 181801 (2007).