Phys. Rev. Lett.
81,
1786–1790
(1998)
Observation of High Momentum η′ Production in B Decays
T. E. Browder et al. (CLEO Collaboration)
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T. E. Browder1, Y. Li1, J. L. Rodriguez1, T. Bergfeld2, B. I. Eisenstein2, J. Ernst2, G. E. Gladding2, G. D. Gollin2, R. M. Hans2, E. Johnson2, I. Karliner2, M. A. Marsh2, M. Palmer2, M. Selen2, J. J. Thaler2, K. W. Edwards3a,3b, A. Bellerive4a,4b, R. Janicek4a,4b, D. B. MacFarlane4a,4b, P. M. Patel4a,4b, A. J. Sadoff5, R. Ammar6, P. Baringer6, A. Bean6, D. Besson6, D. Coppage6, C. Darling6, R. Davis6, S. Kotov6, I. Kravchenko6, N. Kwak6, L. Zhou6, S. Anderson7, Y. Kubota7, S. J. Lee7, J. J. O'Neill7, R. Poling7, T. Riehle7, A. Smith7, M. S. Alam8, S. B. Athar8, Z. Ling8, A. H. Mahmood8, S. Timm8, F. Wappler8, A. Anastassov9, J. E. Duboscq9, D. Fujino9,*, K. K. Gan9, T. Hart9, K. Honscheid9, H. Kagan9, R. Kass9, J. Lee9, M. B. Spencer9, M. Sung9, A. Undrus9,†, A. Wolf9, M. M. Zoeller9, B. Nemati10, S. J. Richichi10, W. R. Ross10, H. Severini10, P. Skubic10, M. Bishai11, J. Fast11, J. W. Hinson11, N. Menon11, D. H. Miller11, E. I. Shibata11, I. P. J. Shipsey11, M. Yurko11, S. Glenn12, Y. Kwon12,‡, A. L. Lyon12, S. Roberts12, E. H. Thorndike12, C. P. Jessop13, K. Lingel13, H. Marsiske13, M. L. Perl13, V. Savinov13, D. Ugolini13, X. Zhou13, T. E. Coan14, V. Fadeyev14, I. Korolkov14, Y. Maravin14, I. Narsky14, V. Shelkov14, J. Staeck14, R. Stroynowski14, I. Volobouev14, J. Ye14, M. Artuso15, F. Azfar15, A. Efimov15, M. Goldberg15, D. He15, S. Kopp15, G. C. Moneti15, R. Mountain15, S. Schuh15, T. Skwarnicki15, S. Stone15, G. Viehhauser15, J. C. Wang15, X. Xing15, J. Bartelt16, S. E. Csorna16, V. Jain16,§, K. W. McLean16, S. Marka16, R. Godang17, K. Kinoshita17, I. C. Lai17, P. Pomianowski17, S. Schrenk17, G. Bonvicini18, D. Cinabro18, R. Greene18, L. P. Perera18, G. J. Zhou18, M. Chadha19, S. Chan19, G. Eigen19, J. S. Miller19, M. Schmidtler19, J. Urheim19, A. J. Weinstein19, F. Würthwein19, D. W. Bliss20, G. Masek20, H. P. Paar20, S. Prell20, V. Sharma20, D. M. Asner21, J. Gronberg21, T. S. Hill21, D. J. Lange21, R. J. Morrison21, H. N. Nelson21, T. K. Nelson21, D. Roberts21, B. H. Behrens22, W. T. Ford22, A. Gritsan22, J. Roy22, J. G. Smith22, J. P. Alexander23, R. Baker23, C. Bebek23, B. E. Berger23, K. Berkelman23, K. Bloom23, V. Boisvert23, D. G. Cassel23, D. S. Crowcroft23, M. Dickson23, S. von Dombrowski23, P. S. Drell23, K. M. Ecklund23, R. Ehrlich23, A. D. Foland23, P. Gaidarev23, L. Gibbons23, B. Gittelman23, S. W. Gray23, D. L. Hartill23, B. K. Heltsley23, P. I. Hopman23, J. Kandaswamy23, P. C. Kim23, D. L. Kreinick23, T. Lee23, Y. Liu23, N. B. Mistry23, C. R. Ng23, E. Nordberg23, M. Ogg23,**, J. R. Patterson23, D. Peterson23, D. Riley23, A. Soffer23, B. Valant-Spaight23, C. Ward23, M. Athanas24, P. Avery24, C. D. Jones24, M. Lohner24, S. Patton24, C. Prescott24, J. Yelton24, J. Zheng24, G. Brandenburg25, R. A. Briere25, A. Ershov25, Y. S. Gao25, D. Y.-J. Kim25, R. Wilson25, and H. Yamamoto25 (CLEO Collaboration)
1University of Hawaii at Manoa, Honolulu, Hawaii 96822
2University of Illinois, Urbana-Champaign, Illinois 61801
3aCarleton University, Ottawa, Ontario, Canada K1S 5B6
3band the Institute of Particle Physics, Montréal, Québec, Canada
4aMcGill University, Montréal, Québec, Canada H3A 2T8
4band the Institute of Particle Physics, Montréal, Québec, Canada
5Ithaca College, Ithaca, New York 14850
6University of Kansas, Lawrence, Kansas 66045
7University of Minnesota, Minneapolis, Minnesota 55455
8State University of New York at Albany, Albany, New York 12222
9The Ohio State University, Columbus, Ohio 43210
10University of Oklahoma, Norman, Oklahoma 73019
11Purdue University, West Lafayette, Indiana 47907
12University of Rochester, Rochester, New York 14627
13Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
14Southern Methodist University, Dallas, Texas 75275
15Syracuse University, Syracuse, New York 13244
16Vanderbilt University, Nashville, Tennessee 37235
17Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
18Wayne State University, Detroit, Michigan 48202
19California Institute of Technology, Pasadena, California 91125
20University of California, San Diego, La Jolla, California 92093
21University of California, Santa Barbara, California 93106
22University of Colorado, Boulder, Colorado 80309-0390
23Cornell University, Ithaca, New York 14853
24University of Florida, Gainesville, Florida 32611
25Harvard University, Cambridge, Massachusetts 02138
Received 28 April 1998; published in the issue dated 31 August 1998
We report the first observation of B→η′X transitions with high momentum η′ mesons. We observe 39.0±11.6B decay events with 2.0<pη′<2.7 GeV/c, the high momentum region where background from b→c processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to b→sg* transitions. Given that interpretation, we find B(B→η′Xs) = [6.2±1.6(stat)±1.3(syst)-1.5+0.0(bkg)]×10-4 for 2.0<pη′<2.7 GeV/c.
© 1998 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.1786
DOI:
10.1103/PhysRevLett.81.1786
*Permanent address: Lawrence Livermore National Laboratory, Livermore, CA 94551. †Permanent address: BINP, RU-630090 Novosibirsk, Russia. ‡Permanent address: Yonsei University, Seoul 120-749, Korea. §Permanent address: Brookhaven National Laboratory, Upton, NY 11973. **Permanent address: University of Texas, Austin, TX 78712.
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