Recent Charm Results From CLEO

TL;DR

This paper reports on recent charm meson decay analyses from the CLEO experiment, including Dalitz plot studies and limits on D0-D0bar mixing, providing insights into charm decay dynamics and mixing phenomena.

Contribution

It presents new Dalitz plot analysis results and sets the first experimental limit on D0-D0bar mixing parameter R_{mix} at 0.87%.

Findings

Rich decay structure observed in D0->K0spi+pi-

No evidence of D0-D0bar mixing in D0->K*+e-nu decays

Limit on mixing parameter R_{mix} < 0.87% at 95% confidence

Abstract

We describe two recent results using data collected with the CLEO detector at the CESR e+e- collider at energies near the Upsilon(4S). The first is a Dalitz plot analysis of the decay D0->K0spi+pi-. We observe a rich structure including the decay D0->K*+pi- which may be produced by D0-D0bar mixing or doubly Cabibbo-suppressed decays. We also search for D0-D0bar mixing in the decay D0->K*+e-nuebar. We observe no events and limit the mixing parameter R_mix to be less than 0.87% at the 95% confidence level.