2008/07/31 by CLEO Collaboration, R. A. Briere, T. Ferguson +98
Physics and Astronomy · #Detector #Extrapolation #Hadron #High-Energy Particle Collisions Research #Meson #Momentum (technical analysis) #Particle physics theoretical and experimental studies #Photon #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Radiative transfer #hep-ex
paper · pdf · doi:10.1103/physrevd.78.092007
published as Phys.Rev.D78:092007,2008 · Version 2 updates include corrections to important errors in Table V and VII column headers which summarize results, and additional minor edits. 17 pages, available through http://www.lns.cornell.edu/public/CLNS/
openalex publication_date 2008/11/14 · arxiv created 2008/11/15 · arxiv updated 2010/04/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Using \ensuremathΥ(2S) and \ensuremathΥ(3S) data collected with the CLEO III detector we have searched for decays of \ensuremathχbJ to final states with open charm. We fully reconstruct D0 mesons with p_D0>2.5 GeV/c in three decay modes (K^\ensuremath-\ensuremathπ+, K^\ensuremath-\ensuremathπ+\ensuremathπ0, and K^\ensuremath-\ensuremathπ^\ensuremath-\ensuremathπ+\ensuremathπ+) in coincidence with radiative transition photons that tag the production of one of the \ensuremathχbJ(nP) states. Significant signals are obtained for the two J=1 states. Recent nonrelativistic QCD (NRQCD) calculations of \ensuremathχbJ(nP)\ensuremath→ccX depend on one nonperturbative parameter per \ensuremathχbJ triplet. The extrapolation from the observed D0X rate over a limited momentum range to a full ccX rate also depends on these same parameters. Using our data to fit for these parameters, we extract results which agree well with NRQCD predictions, confirming the expectation that charm production is largest for the J=1 states. In particular, for J=1, our results are consistent with ccg accounting for about one-quarter of all hadronic decays.