Phys. Rev. D
78,
092007
(2008)
[11 pages]
Inclusive χbJ(nP) decays to D0X
R. A. Briere et al. CLEO Collaboration
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R. A. Briere1, T. Ferguson1, G. Tatishvili1, H. Vogel1, M. E. Watkins1, J. L. Rosner2, J. P. Alexander3, D. G. Cassel3, J. E. Duboscq3, R. Ehrlich3, L. Fields3, R. S. Galik3, L. Gibbons3, R. Gray3, S. W. Gray3, D. L. Hartill3, B. K. Heltsley3, D. Hertz3, J. Kandaswamy3, D. L. Kreinick3, V. E. Kuznetsov3, H. Mahlke-Krüger3, D. Mohapatra3, P. U. E. Onyisi3, J. R. Patterson3, D. Peterson3, D. Riley3, A. Ryd3, A. J. Sadoff3, X. Shi3, S. Stroiney3, W. M. Sun3, T. Wilksen3, S. B. Athar4, R. Patel4, J. Yelton4, P. Rubin5, B. I. Eisenstein6, I. Karliner6, S. Mehrabyan6, N. Lowrey6, M. Selen6, E. J. White6, J. Wiss6, R. E. Mitchell7, M. R. Shepherd7, D. Besson8, T. K. Pedlar9, D. Cronin-Hennessy10, K. Y. Gao10, J. Hietala10, Y. Kubota10, T. Klein10, B. W. Lang10, R. Poling10, A. W. Scott10, P. Zweber10, S. Dobbs11, Z. Metreveli11, K. K. Seth11, A. Tomaradze11, J. Libby12, A. Powell12, G. Wilkinson12, K. M. Ecklund13, W. Love14, V. Savinov14, A. Lopez15, H. Mendez15, J. Ramirez15, J. Y. Ge16, D. H. Miller16, I. P. J. Shipsey16, B. Xin16, G. S. Adams17, M. Anderson17, J. P. Cummings17, I. Danko17, D. Hu17, B. Moziak17, J. Napolitano17, Q. He18, J. Insler18, H. Muramatsu18, C. S. Park18, E. H. Thorndike18, F. Yang18, M. Artuso19, S. Blusk19, S. Khalil19, J. Li19, R. Mountain19, S. Nisar19, K. Randrianarivony19, N. Sultana19, T. Skwarnicki19, S. Stone19, J. C. Wang19, L. M. Zhang19, G. Bonvicini20, D. Cinabro20, M. Dubrovin20, A. Lincoln20, P. Naik21, J. Rademacker21, D. M. Asner22, K. W. Edwards22, and J. Reed22 (CLEO Collaboration)
1Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
2Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
3Cornell University, Ithaca, New York 14853, USA
4University of Florida, Gainesville, Florida 32611, USA
5George Mason University, Fairfax, Virginia 22030, USA
6University of Illinois, Urbana-Champaign, Illinois 61801, USA
7Indiana University, Bloomington, Indiana 47405, USA
8University of Kansas, Lawrence, Kansas 66045, USA
9Luther College, Decorah, Iowa 52101, USA
10University of Minnesota, Minneapolis, Minnesota 55455, USA
11Northwestern University, Evanston, Illinois 60208, USA
12University of Oxford, Oxford OX1 3RH, United Kingdom
13State University of New York at Buffalo, Buffalo, New York 14260, USA
14University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
15University of Puerto Rico, Mayaguez, Puerto Rico 00681
16Purdue University, West Lafayette, Indiana 47907, USA
17Rensselaer Polytechnic Institute, Troy, New York 12180, USA
18University of Rochester, Rochester, New York 14627, USA
19Syracuse University, Syracuse, New York 13244, USA
20Wayne State University, Detroit, Michigan 48202, USA
21University of Bristol, Bristol BS8 1TL, United Kingdom
22Carleton University, Ottawa, Ontario, Canada K1S 5B6
Received 23 July 2008; published 14 November 2008
Using Υ(2S) and Υ(3S) data collected with the CLEO III detector we have searched for decays of χbJ to final states with open charm. We fully reconstruct D0 mesons with pD0>2.5 GeV/c in three decay modes (K-π+, K-π+π0, and K-π-π+π+) in coincidence with radiative transition photons that tag the production of one of the χbJ(nP) states. Significant signals are obtained for the two J=1 states. Recent nonrelativistic QCD (NRQCD) calculations of χbJ(nP)→cc̅ X depend on one nonperturbative parameter per χbJ triplet. The extrapolation from the observed D0X rate over a limited momentum range to a full cc̅ X 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 cc̅ g accounting for about one-quarter of all hadronic decays.
© 2008 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.78.092007
DOI:
10.1103/PhysRevD.78.092007
PACS:
13.25.Gv, 13.87.Fh, 14.65.Dw
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