Phys. Rev. Lett.
80,
3456–3460
(1998)
Observation of Exclusive Two-Body B Decays to Kaons and Pions
R. Godang et al. (CLEO Collaboration)
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R. Godang1, K. Kinoshita1, I. C. Lai1, P. Pomianowski1, S. Schrenk1, G. Bonvicini2, D. Cinabro2, R. Greene2, L. P. Perera2, G. J. Zhou2, M. Chadha3, S. Chan3, G. Eigen3, J. S. Miller3, C. O'Grady3, M. Schmidtler3, J. Urheim3, A. J. Weinstein3, F. Würthwein3, D. W. Bliss4, G. Masek4, H. P. Paar4, S. Prell4, V. Sharma4, D. M. Asner5, J. Gronberg5, T. S. Hill5, D. J. Lange5, R. J. Morrison5, H. N. Nelson5, T. K. Nelson5, D. Roberts5, A. Ryd5, R. Balest6, B. H. Behrens6, W. T. Ford6, A. Gritsan6, H. Park6, J. Roy6, J. G. Smith6, J. P. Alexander7, R. Baker7, C. Bebek7, B. E. Berger7, K. Berkelman7, K. Bloom7, V. Boisvert7, D. G. Cassel7, D. S. Crowcroft7, M. Dickson7, S. von Dombrowski7, P. S. Drell7, K. M. Ecklund7, R. Ehrlich7, A. D. Foland7, P. Gaidarev7, R. S. Galik7, L. Gibbons7, B. Gittelman7, S. W. Gray7, D. L. Hartill7, B. K. Heltsley7, P. I. Hopman7, J. Kandaswamy7, P. C. Kim7, D. L. Kreinick7, T. Lee7, Y. Liu7, N. B. Mistry7, C. R. Ng7, E. Nordberg7, M. Ogg7,*, J. R. Patterson7, D. Peterson7, D. Riley7, A. Soffer7, B. Valant-Spaight7, C. Ward7, M. Athanas8, P. Avery8, C. D. Jones8, M. Lohner8, S. Patton8, C. Prescott8, J. Yelton8, J. Zheng8, G. Brandenburg9, R. A. Briere9, A. Ershov9, Y. S. Gao9, D. Y.-J. Kim9, R. Wilson9, H. Yamamoto9, T. E. Browder10, Y. Li10, J. L. Rodriguez10, T. Bergfeld11, B. I. Eisenstein11, J. Ernst11, G. E. Gladding11, G. D. Gollin11, R. M. Hans11, E. Johnson11, I. Karliner11, M. A. Marsh11, M. Palmer11, M. Selen11, J. J. Thaler11, K. W. Edwards12, A. Bellerive13, R. Janicek13, D. B. MacFarlane13, P. M. Patel13, A. J. Sadoff14, R. Ammar15, P. Baringer15, A. Bean15, D. Besson15, D. Coppage15, C. Darling15, R. Davis15, S. Kotov15, I. Kravchenko15, N. Kwak15, L. Zhou15, S. Anderson16, Y. Kubota16, S. J. Lee16, J. J. O'Neill16, R. Poling16, T. Riehle16, A. Smith16, M. S. Alam17, S. B. Athar17, Z. Ling17, A. H. Mahmood17, S. Timm17, F. Wappler17, A. Anastassov18, J. E. Duboscq18, D. Fujino18,†, K. K. Gan18, T. Hart18, K. Honscheid18, H. Kagan18, R. Kass18, J. Lee18, M. B. Spencer18, M. Sung18, A. Undrus18,‡, R. Wanke18, A. Wolf18, M. M. Zoeller18, B. Nemati19, S. J. Richichi19, W. R. Ross19, H. Severini19, P. Skubic19, M. Bishai20, J. Fast20, J. W. Hinson20, N. Menon20, D. H. Miller20, E. I. Shibata20, I. P. J. Shipsey20, M. Yurko20, S. Glenn21, S. D. Johnson21, Y. Kwon21,§, S. Roberts21, E. H. Thorndike21, C. P. Jessop22, K. Lingel22, H. Marsiske22, M. L. Perl22, V. Savinov22, D. Ugolini22, R. Wang22, X. Zhou22, T. E. Coan23, V. Fadeyev23, I. Korolkov23, Y. Maravin23, I. Narsky23, V. Shelkov23, J. Staeck23, R. Stroynowski23, I. Volobouev23, J. Ye23, M. Artuso24, F. Azfar24, A. Efimov24, M. Goldberg24, D. He24, S. Kopp24, G. C. Moneti24, R. Mountain24, S. Schuh24, T. Skwarnicki24, S. Stone24, G. Viehhauser24, X. Xing24, J. Bartelt25, S. E. Csorna25, V. Jain25,**, K. W. McLean25, and S. Marka25 (CLEO Collaboration)
1Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
2Wayne State University, Detroit, Michigan 48202
3California Institute of Technology, Pasadena, California 91125
4University of California, San Diego, La Jolla, California 92093
5University of California, Santa Barbara, California 93106
6University of Colorado, Boulder, Colorado 80309-0390
7Cornell University, Ithaca, New York 14853
8University of Florida, Gainesville, Florida 32611
9Harvard University, Cambridge, Massachusetts 02138
10University of Hawaii at Manoa, Honolulu, Hawaii 96822
11University of Illinois, Urbana-Champaign, Illinois 61801
12Carleton University, Ottawa, Ontario, Canada K1S 5B6, and the Institute of Particle Physics, Montréal, Québec, Canada
13McGill University, Montréal, Québec, Canada H3A 2T8, and the Institute of Particle Physics, Montréal, Québec, Canada
14Ithaca College, Ithaca, New York 14850
15University of Kansas, Lawrence, Kansas 66045
16University of Minnesota, Minneapolis, Minnesota 55455
17State University of New York at Albany, Albany, New York 12222
18The Ohio State University, Columbus, Ohio 43210
19University of Oklahoma, Norman, Oklahoma 73019
20Purdue University, West Lafayette, Indiana 47907
21University of Rochester, Rochester, New York 14627
22Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
23Southern Methodist University, Dallas, Texas 75275
24Syracuse University, Syracuse, New York 13244
25Vanderbilt University, Nashville, Tennessee 37235
Received 17 November 1997; published in the issue dated 20 April 1998
We have studied two-body charmless hadronic decays of B mesons into the final states ππ, Kπ, and KK. Using 3.3×106 BB̅ pairs collected with the CLEO-II detector, we have made the first observation of the decay B0→K+π-, the sum of B+→π+π0 and B+→K+π0 decays, and see strong evidence for the decay B+→K0π+ (an average over charge-conjugate states is always implied). We place upper limits on branching fractions for the remaining decay modes.
© 1998 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.80.3456
DOI:
10.1103/PhysRevLett.80.3456
PACS:
13.25.Hw, 11.30.Er, 14.40.Nd
*Permanent address: University of Texas, Austin, TX 78712. †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.
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