2004/08/13 by B. I. Eisenstein, Eisenstein, B. I., CLEO Collaboration +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0408055
24 pages postscript,also available through http://www.lns.cornell.edu/public/CONF/2004/, Presented at ICHEP Aug. 16-22,2004, Beijing, China
arxiv created 2004/08/13 · arxiv updated 2009/12/01
Using nearly 60 pb-1 of data collected with the CLEO-c detector at the psiprime resonance, we measure absolute branching fractions for three D0 and two D+ Cabibbo-allowed hadronic decay modes, and the cross section for e+e- to D Dbar at Ecm = 3.77 GeV. We report preliminary measurements of the reference branching fractions, B(D0 to K- pi+) = (3.92± 0.08± 0.23)% and B(D+ to K- pi+ pi+) = (9.8± 0.4± 0.8)%, and preliminary measurements of other major branching fractions, B(D0 to K- pi+ pi0) = (14.3± 0.3± 1.0)%, B(D0 to K- pi+ pi- pi+) = (8.1± 0.2± 0.9)%, and B(D+ to Ks pi+) = (1.61± 0.08± 0.15)%. We determine preliminary values of the cross sections, sigma(e+ e- to D0 D0bar) = (3.47± 0.07± 0.15) nb, sigma(e+ e- to D+ D-) = (2.59± 0.11± 0.11) nb, and sigma(e+ e- to D Dbar) = (6.06± 0.13± 0.22) nb. We note that the Monte Carlo simulations used in calculating efficiencies in this analysis included final state radiation. However, the branching fractions used in the Particle Data Group averages do not include this effect. If we had not included final state radiation in our simulations, branching fractions would have been 0.5% to 2% lower.