APS » Phys. Rev. D » Volume 78 » Issue 9

R. A. Briere,¹ T. Ferguson,¹ G. Tatishvili,¹ H. Vogel,¹ M. E. Watkins,¹ J. L. Rosner,² J. P. Alexander,³ D. G. Cassel,³ J. E. Duboscq,³ R. Ehrlich,³ L. Fields,³ R. S. Galik,³ L. Gibbons,³ R. Gray,³ S. W. Gray,³ D. L. Hartill,³ B. K. Heltsley,³ D. Hertz,³ J. Kandaswamy,³ D. L. Kreinick,³ V. E. Kuznetsov,³ H. Mahlke-Krüger,³ D. Mohapatra,³ P. U. E. Onyisi,³ J. R. Patterson,³ D. Peterson,³ D. Riley,³ A. Ryd,³ A. J. Sadoff,³ X. Shi,³ S. Stroiney,³ W. M. Sun,³ T. Wilksen,³ S. B. Athar,⁴ R. Patel,⁴ J. Yelton,⁴ P. Rubin,⁵ B. I. Eisenstein,⁶ I. Karliner,⁶ S. Mehrabyan,⁶ N. Lowrey,⁶ M. Selen,⁶ E. J. White,⁶ J. Wiss,⁶ R. E. Mitchell,⁷ M. R. Shepherd,⁷ D. Besson,⁸ T. K. Pedlar,⁹ D. Cronin-Hennessy,¹⁰ K. Y. Gao,¹⁰ J. Hietala,¹⁰ Y. Kubota,¹⁰ T. Klein,¹⁰ B. W. Lang,¹⁰ R. Poling,¹⁰ A. W. Scott,¹⁰ P. Zweber,¹⁰ S. Dobbs,¹¹ Z. Metreveli,¹¹ K. K. Seth,¹¹ A. Tomaradze,¹¹ J. Libby,¹² A. Powell,¹² G. Wilkinson,¹² K. M. Ecklund,¹³ W. Love,¹⁴ V. Savinov,¹⁴ A. Lopez,¹⁵ H. Mendez,¹⁵ J. Ramirez,¹⁵ J. Y. Ge,¹⁶ D. H. Miller,¹⁶ I. P. J. Shipsey,¹⁶ B. Xin,¹⁶ G. S. Adams,¹⁷ M. Anderson,¹⁷ J. P. Cummings,¹⁷ I. Danko,¹⁷ D. Hu,¹⁷ B. Moziak,¹⁷ J. Napolitano,¹⁷ Q. He,¹⁸ J. Insler,¹⁸ H. Muramatsu,¹⁸ C. S. Park,¹⁸ E. H. Thorndike,¹⁸ F. Yang,¹⁸ M. Artuso,¹⁹ S. Blusk,¹⁹ S. Khalil,¹⁹ J. Li,¹⁹ R. Mountain,¹⁹ S. Nisar,¹⁹ K. Randrianarivony,¹⁹ N. Sultana,¹⁹ T. Skwarnicki,¹⁹ S. Stone,¹⁹ J. C. Wang,¹⁹ L. M. Zhang,¹⁹ G. Bonvicini,²⁰ D. Cinabro,²⁰ M. Dubrovin,²⁰ A. Lincoln,²⁰ P. Naik,²¹ J. Rademacker,²¹ D. M. Asner,²² K. W. Edwards,²² 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

Using Upsilon(2S) and Upsilon(3S) data collected with the CLEO III detector we have searched for decays of chi_bJ to final states with open charm. We fully reconstruct D⁰ mesons with p_D⁰>2.5 GeV/c in three decay modes (K^-pi⁺, K^-pi⁺pi⁰, and K^-pi^-pi⁺pi⁺) in coincidence with radiative transition photons that tag the production of one of the chi_bJ(nP) states. Significant signals are obtained for the two J=1 states. Recent nonrelativistic QCD (NRQCD) calculations of chi_bJ(nP)-->c[overline c]X depend on one nonperturbative parameter per chi_bJ triplet. The extrapolation from the observed D⁰X rate over a limited momentum range to a full c[overline c]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 c[overline c]g accounting for about one-quarter of all hadronic decays.

©2008 The American Physical Society

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