Recent Results From CLEO-c

2005/05/23 by Alex Smith, Smith, Alex
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0505068

Proceedings submission for Les Rencontres de Physique de la Vallee D'Aoste 9 pages, 10 figures

arxiv created 2005/05/23 · arxiv updated 2009/12/01

Abstract

This paper describes recent preliminary results from the CLEO-c experiment using an initial ~60 pb^-1 sample of data collected in e⁺e^- collisions at a center of mass energy around the mass of the psi(3770). A first measurement of the branching fraction BR(D⁺ -> mu⁺ nu) = (3.5 +/- 1.4 +/- 0.6)x 10^-4 and the corresponding decay constant f_D = (202 +/- 41 +/- 17) MeV has been made. Several charged and neutral D meson absolute exclusive semileptonic branching fractions have been measured, including first measurements of the branching fractions BR(D⁰ -> rho^-e⁺ nu) = (0.19 +/- 0.04 +/- 0.02)% and BR(D⁺ -> omega e⁺ nu) = (0.17 +/- 0.006 +/- 0.01)%. Estimated uncertainties for inclusive D semileptonic decay modes are also presented. Fits to single and double D tagged events are used to extract absolute branching fractions of several hadronic D decay modes and DDbar production cross sections. Most of these results from this small preliminary sample are already of greater sensitivity than previously published results.

Related

• Recent Results from CLEO
• First CLEO-c Results on Exclusive D⁰ Semileptonic Decays
• Hadronic branching fractions and DDbar cross-sections at Psi(3770) from CLEO-c
• Measurements of Hadronic, Semileptonic and Leptonic Decays of D Mesons at E_cm=3.77 GeV in CLEO-c
• First Results from CLEO-c at E_cm=Psi(3770)