Phys. Rev. Lett.
89,
282001
(2002)
[5 pages]
Measurements of Inclusive B→ψ Production
S. Anderson et al. CLEO Collaboration
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S. Anderson1, V. V. Frolov1, Y. Kubota1, S. J. Lee1, S. Z. Li1, R. Poling1, A. Smith1, C. J. Stepaniak1, J. Urheim1, Z. Metreveli2, K. K. Seth2, A. Tomaradze2, P. Zweber2, S. Ahmed3, M. S. Alam3, L. Jian3, M. Saleem3, F. Wappler3, E. Eckhart4, K. K. Gan4, C. Gwon4, T. Hart4, K. Honscheid4, D. Hufnagel4, H. Kagan4, R. Kass4, T. K. Pedlar4, J. B. Thayer4, E. von Toerne4, T. Wilksen4, M. M. Zoeller4, H. Muramatsu5, S. J. Richichi5, H. Severini5, P. Skubic5, S. A. Dytman6, J. A. Mueller6, S. Nam6, V. Savinov6, S. Chen7, J. W. Hinson7, J. Lee7, D. H. Miller7, V. Pavlunin7, E. I. Shibata7, I. P. J. Shipsey7, D. Cronin-Hennessy8, A. L. Lyon8, C. S. Park8, W. Park8, E. H. Thorndike8, T. E. Coan9, Y. S. Gao9, F. Liu9, Y. Maravin9, I. Narsky9, R. Stroynowski9, M. Artuso10, C. Boulahouache10, K. Bukin10, E. Dambasuren10, K. Khroustalev10, G. C. Moneti10, R. Mountain10, R. Nandakumar10, T. Skwarnicki10, S. Stone10, J. C. Wang10, A. H. Mahmood11, S. E. Csorna12, I. Danko12, Z. Xu12, G. Bonvicini13, D. Cinabro13, M. Dubrovin13, S. McGee13, A. Bornheim14, E. Lipeles14, S. P. Pappas14, A. Shapiro14, W. M. Sun14, A. J. Weinstein14, G. Masek15, H. P. Paar15, R. Mahapatra16, H. N. Nelson16, R. A. Briere17, G. P. Chen17, T. Ferguson17, G. Tatishvili17, H. Vogel17, N. E. Adam18, J. P. Alexander18, K. Berkelman18, F. Blanc18, V. Boisvert18, D. G. Cassel18, P. S. Drell18, J. E. Duboscq18, K. M. Ecklund18, R. Ehrlich18, L. Gibbons18, B. Gittelman18, S. W. Gray18, D. L. Hartill18, B. K. Heltsley18, L. Hsu18, C. D. Jones18, J. Kandaswamy18, D. L. Kreinick18, A. Magerkurth18, H. Mahlke-Krüger18, T. O. Meyer18, N. B. Mistry18, E. Nordberg18, J. R. Patterson18, D. Peterson18, J. Pivarski18, D. Riley18, A. J. Sadoff18, H. Schwarthoff18, M. R. Shepherd18, J. G. Thayer18, D. Urner18, B. Valant-Spaight18, G. Viehhauser18, A. Warburton18, M. Weinberger18, S. B. Athar19, P. Avery19, L. Breva-Newell19, V. Potlia19, H. Stoeck19, J. Yelton19, G. Brandenburg20, A. Ershov20, D. Y.-J. Kim20, R. Wilson20, K. Benslama21, B. I. Eisenstein21, J. Ernst21, G. D. Gollin21, R. M. Hans21, I. Karliner21, N. Lowrey21, M. A. Marsh21, C. Plager21, C. Sedlack21, M. Selen21, J. J. Thaler21, J. Williams21, K. W. Edwards22, R. Ammar23, D. Besson23, and X. Zhao23 (CLEO Collaboration)
1University of Minnesota, Minneapolis, Minnesota 55455
2Northwestern University, Evanston, Illinois 60208
3State University of New York at Albany, Albany, New York 12222
4The Ohio State University, Columbus, Ohio 43210
5University of Oklahoma, Norman, Oklahoma 73019
6University of Pittsburgh, Pittsburgh, Pennsylvania 15260
7Purdue University, West Lafayette, Indiana 47907
8University of Rochester, Rochester, New York 14627
9Southern Methodist University, Dallas, Texas 75275
10Syracuse University, Syracuse, New York 13244
11University of Texas–Pan American, Edinburg, Texas 78539
12Vanderbilt University, Nashville, Tennessee 37235
13Wayne State University, Detroit, Michigan 48202
14California Institute of Technology, Pasadena, California 91125
15University of California, San Diego, La Jolla, California 92093
16University of California, Santa Barbara, California 93106
17Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
18Cornell University, Ithaca, New York 14853
19University of Florida, Gainesville, Florida 32611
20Harvard University, Cambridge, Massachusetts 02138
21University of Illinois, Urbana-Champaign, Illinois 61801
22Carleton University, Ottawa, Ontario, Canada K1S 5B6 and the Institute of Particle Physics, Canada M5S 1A7
23University of Kansas, Lawrence, Kansas 66045
Received 5 May 2002; published 26 December 2002
Using the combined CLEO II and CLEO II.V data sets of 9.1 fb-1 at the ϒ(4S), we measure properties of ψ mesons produced directly from decays of the B meson, where “B” denotes an admixture of B+, B-, B0, and B̅ 0, and “ψ” denotes either J/ψ(1S) or ψ(2S). We report first measurements of ψ polarization in B→ψ(direct)X: αψ(1S)=-0.30-0.06+0.07±0.04 and αψ(2S)=-0.45-0.19+0.22±0.04. We also report improved measurements of the momentum distributions of ψ produced directly from B decays, correcting for measurement smearing. Finally, we report measurements of the inclusive branching fraction for B→ψX and B→χc1X.
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.282001
DOI:
10.1103/PhysRevLett.89.282001
PACS:
13.25.Hw, 12.38.Qk, 13.25.Gv
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