New results from CLEO

TL;DR

This paper reports recent experimental results from the CLEO Collaboration, including measurements of leptonic decay rates, searches for meson mixing, and baryon production near threshold, based on data from 1995 onward at CESR.

Contribution

It provides new measurements and searches in heavy quarkonium decays, meson mixing, and baryon production using data collected over several years at CESR.

Findings

Measured leptonic branching fractions for J/ψ and Υ states.

Searched for D0-D0bar mixing with Dalitz plot analysis.

Investigated e+e- to Lambda_b Lambda_bbar near threshold.

Abstract

We present recent results from the CLEO Collaboration. The data used were collected from 1995 untill now at the Cornell Electron-positron Storage Ring (CESR). Measurements of the leptonic branching fractions for $J/\psi \to e^+ e^-, \mu^+ \mu^-$ and $\Upsilon(1,2,3S) \to \mu^+ \mu^-$, search for $D^0-\bar{D^0}$ mixing using time dependent Dalitz plot analyses of the decay $D^0 \to K^0_S\pi^+\pi^-$, and search for the process $e^+e^- \to \Lambda_b \bar{\Lambda_b}$ near threshold are discussed.