Search for CP Violation in $D^{0}\to K_{S}^{0}\pi^{0}$, $D^{0}\to \pi^{0}\pi^{0}$ and $D^{0}\to K_{S}^{0}K_{S}^{0}$

TL;DR

This study searched for CP violation in specific neutral charm meson decays using data from the CLEO detector, finding no significant asymmetries except a large uncertainty in one mode.

Contribution

First measurement of CP asymmetries in D0 decays to K0sPi0, Pi0Pi0, and K0sK0s with no significant CP violation observed.

Findings

Asymmetry in D0 to K0sPi0 is (+0.1 +- 1.3)%

Asymmetry in D0 to Pi0Pi0 is (+0.1 +- 4.8)%

Asymmetry in D0 to K0sK0s is (-23 +- 19)%

Abstract

We have searched for CP-violating asymmetries in neutral charm meson decays in 13.7 fb^-1 of e^+e^- collision data at sqrt{s} = 10.6 GeV with the CLEO detector. The measured asymmetries in the rate of D0 and D0bar decays to K0sPi0, Pi0Pi0 and K0sK0s final states are (+0.1 +- 1.3)%, (+0.1 +- 4.8)% and (-23 +- 19)%, respectively.