Phys. Rev. Lett.
80,
3710–3714
(1998)
Two-Body B Meson Decays to η and η′: Observation of B→η′K
B. H. Behrens et al. (CLEO Collaboration)
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B. H. Behrens1, W. T. Ford1, A. Gritsan1, H. Krieg1, J. Roy1, J. G. Smith1, M. Zhao1, J. P. Alexander2, R. Baker2, C. Bebek2, B. E. Berger2, K. Berkelman2, K. Bloom2, V. Boisvert2, D. G. Cassel2, D. S. Crowcroft2, M. Dickson2, S. von Dombrowski2, P. S. Drell2, K. M. Ecklund2, R. Ehrlich2, A. D. Foland2, P. Gaidarev2, L. Gibbons2, B. Gittelman2, S. W. Gray2, D. L. Hartill2, B. K. Heltsley2, P. I. Hopman2, J. Kandaswamy2, P. C. Kim2, D. L. Kreinick2, T. Lee2, Y. Liu2, N. B. Mistry2, C. R. Ng2, E. Nordberg2, M. Ogg2,*, J. R. Patterson2, D. Peterson2, D. Riley2, A. Soffer2, B. Valant-Spaight2, C. Ward2, M. Athanas3, P. Avery3, C. D. Jones3, M. Lohner3, S. Patton3, C. Prescott3, J. Yelton3, J. Zheng3, G. Brandenburg4, R. A. Briere4, A. Ershov4, Y. S. Gao4, D. Y.-J. Kim4, R. Wilson4, H. Yamamoto4, T. E. Browder5, Y. Li5, J. L. Rodriguez5, T. Bergfeld6, B. I. Eisenstein6, J. Ernst6, G. E. Gladding6, G. D. Gollin6, R. M. Hans6, E. Johnson6, I. Karliner6, M. A. Marsh6, M. Palmer6, M. Selen6, J. J. Thaler6, K. W. Edwards7a,7b, A. Bellerive8a,8b, R. Janicek8a,8b, D. B. MacFarlane8a,8b, P. M. Patel8a,8b, A. J. Sadoff9, R. Ammar10, P. Baringer10, A. Bean10, D. Besson10, D. Coppage10, C. Darling10, R. Davis10, S. Kotov10, I. Kravchenko10, N. Kwak10, L. Zhou10, S. Anderson11, Y. Kubota11, S. J. Lee11, J. J. O'Neill11, R. Poling11, T. Riehle11, A. Smith11, M. S. Alam12, S. B. Athar12, Z. Ling12, A. H. Mahmood12, S. Timm12, F. Wappler12, A. Anastassov13, J. E. Duboscq13, D. Fujino13,†, K. K. Gan13, T. Hart13, K. Honscheid13, H. Kagan13, R. Kass13, J. Lee13, M. B. Spencer13, M. Sung13, A. Undrus13,‡, A. Wolf13, M. M. Zoeller13, B. Nemati14, S. J. Richichi14, W. R. Ross14, H. Severini14, P. Skubic14, M. Bishai15, J. Fast15, J. W. Hinson15, N. Menon15, D. H. Miller15, E. I. Shibata15, I. P. J. Shipsey15, M. Yurko15, S. Glenn16, Y. Kwon16,§, S. Roberts16, E. H. Thorndike16, C. P. Jessop17, K. Lingel17, H. Marsiske17, M. L. Perl17, V. Savinov17, D. Ugolini17, R. Wang17, X. Zhou17, T. E. Coan18, V. Fadeyev18, I. Korolkov18, Y. Maravin18, I. Narsky18, V. Shelkov18, J. Staeck18, R. Stroynowski18, I. Volobouev18, J. Ye18, M. Artuso19, F. Azfar19, A. Efimov19, M. Goldberg19, D. He19, S. Kopp19, G. C. Moneti19, R. Mountain19, S. Schuh19, T. Skwarnicki19, S. Stone19, G. Viehhauser19, X. Xing19, J. Bartelt20, S. E. Csorna20, V. Jain20,**, K. W. McLean20, S. Marka20, R. Godang21, K. Kinoshita21, I. C. Lai21, P. Pomianowski21, S. Schrenk21, G. Bonvicini22, D. Cinabro22, R. Greene22, L. P. Perera22, G. J. Zhou22, M. Chadha23, S. Chan23, G. Eigen23, J. S. Miller23, C. O'Grady23, M. Schmidtler23, J. Urheim23, A. J. Weinstein23, F. Würthwein23, D. W. Bliss24, G. Masek24, H. P. Paar24, S. Prell24, V. Sharma24, D. M. Asner25, J. Gronberg25, T. S. Hill25, D. J. Lange25, R. J. Morrison25, H. N. Nelson25, T. K. Nelson25, D. Roberts25, and A. Ryd25 (CLEO Collaboration)
1University of Colorado, Boulder, Colorado 80309-0390
2Cornell University, Ithaca, New York 14853
3University of Florida, Gainesville, Florida 32611
4Harvard University, Cambridge, Massachusetts 02138
5University of Hawaii at Manoa, Honolulu, Hawaii 96822
6University of Illinois, Urbana-Champaign, Illinois 61801
7aCarleton University, Ottawa, Ontario, Canada K1S 5B6
7band the Institute of Particle Physics, Canada
8aMcGill University, Montréal, Québec, Canada H3A 2T8
8band the Institute of Particle Physics, Canada
9Ithaca College, Ithaca, New York 14850
10University of Kansas, Lawrence, Kansas 66045
11University of Minnesota, Minneapolis, Minnesota 55455
12State University of New York at Albany, Albany, New York 12222
13Ohio State University, Columbus, Ohio 43210
14University of Oklahoma, Norman, Oklahoma 73019
15Purdue University, West Lafayette, Indiana 47907
16University of Rochester, Rochester, New York 14627
17Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
18Southern Methodist University, Dallas, Texas 75275
19Syracuse University, Syracuse, New York 13244
20Vanderbilt University, Nashville, Tennessee 37235
21Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
22Wayne State University, Detroit, Michigan 48202
23California Institute of Technology, Pasadena, California 91125
24University of California, San Diego, La Jolla, California 92093
25University of California, Santa Barbara, California 93106
Received 5 January 1998; published in the issue dated 27 April 1998
In a sample of 6.6×106 produced B mesons we have observed decays B→η′K, with branching fractions B(B+→η′K+) = (6.5-1.4+1.5±0.9)×10-5 and B(B0→η′K0) = (4.7-2.0+2.7±0.9)×10-5. We have searched with comparable sensitivity for 17 related decays to final states containing an η or η′ meson accompanied by a single particle or low-lying resonance. Our upper limits for these constrain theoretical interpretations of the B→η′K signal.
© 1998 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.80.3710
DOI:
10.1103/PhysRevLett.80.3710
*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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