Hadronic Decays of Beauty and Charm from CLEO

TL;DR

This paper presents recent experimental results on hadronic decays of charm and beauty mesons from the CLEO detector, including evidence of final state interactions, new decay observations, and resonance measurements.

Contribution

It reports the first observation of B0 -> D*+D*- decay, evidence of final state interactions in B decays, and measurements of charmed meson resonances and decay ratios.

Findings

Evidence for final state interactions in B decays

First observation of B0 -> D*+D*- decay

Measurement of charmed meson resonance properties

Abstract

A selection of recent results on hadronic charm and beauty decays from the CLEO experiment are presented. We report preliminary evidence for the existence of final state interactions in B decays and the first observation of the decay B0 -> D*+D*- with a branching fraction of (6.2^{+4.0}_{-2.9}+/- 1.0)x10^{-4}. We also present preliminary results on the first observation of the broad, J^P=1^+, charmed meson resonance with a mass of 2.461^{+0.041}_{-0.034}+/-0.010+/-0.032 GeV and a width of 290^{+101}_{-79}+/-26+/-36 MeV and branching fraction measurements of the B- -> D_J^0pi- decays. Finally, we report on search for the radial excitation of a spin 1 charmed meson, the D*'+, and on an improved measurement of the ratio of (D0 -> K+pi-)/(D0 -> K-pi^+) decay rates.