Phys. Rev. Lett. 85, 520 - 524 (2000)
Two-Body B Meson Decays to η and η′: Observation of B → ηK*
S. J. Richichi et al. (CLEO Collaboration)
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S. J. Richichi1, H. Severini1, P. Skubic1, A. Undrus1, S. Chen2, J. Fast2, J. W. Hinson2, J. Lee2, N. Menon2, D. H. Miller2, E. I. Shibata2, I. P. J. Shipsey2, V. Pavlunin2, D. Cronin-Hennessy3, Y. Kwon3 *, A. L. Lyon3, E. H. Thorndike3, C. P. Jessop4, H. Marsiske4, M. L. Perl4, V. Savinov4, D. Ugolini4, X. Zhou4, T. E. Coan5, V. Fadeyev5, Y. Maravin5, I. Narsky5, R. Stroynowski5, J. Ye5, T. Wlodek5, M. Artuso6, R. Ayad6, C. Boulahouache6, K. Bukin6, E. Dambasuren6, S. Karamnov6, S. Kopp6, G. Majumder6, G. C. Moneti6, R. Mountain6, S. Schuh6, T. Skwarnicki6, S. Stone6, G. Viehhauser6, J. C. Wang6, A. Wolf6, J. Wu6, S. E. Csorna7, I. Danko7, K. W. McLean7, Sz. Márka7, Z. Xu7, R. Godang8, K. Kinoshita8 †, I. C. Lai8, S. Schrenk8, G. Bonvicini9, D. Cinabro9, L. P. Perera9, G. J. Zhou9, G. Eigen10, E. Lipeles10, M. Schmidtler10, A. Shapiro10, W. M. Sun10, A. J. Weinstein10, F. Würthwein10 ‡, D. E. Jaffe11, G. Masek11, H. P. Paar11, E. M. Potter11, S. Prell11, V. Sharma11, D. M. Asner12, A. Eppich12, J. Gronberg12, T. S. Hill12, D. J. Lange12, R. J. Morrison12, H. N. Nelson12, R. A. Briere13, B. H. Behrens14, W. T. Ford14, A. Gritsan14, H. Krieg14, J. Roy14, J. G. Smith14, J. P. Alexander15, R. Baker15, C. Bebek15, B. E. Berger15, K. Berkelman15, F. Blanc15, V. Boisvert15, D. G. Cassel15, M. Dickson15, P. S. Drell15, K. M. Ecklund15, R. Ehrlich15, A. D. Foland15, P. Gaidarev15, L. Gibbons15, B. Gittelman15, S. W. Gray15, D. L. Hartill15, B. K. Heltsley15, P. I. Hopman15, C. D. Jones15, D. L. Kreinick15, M. Lohner15, A. Magerkurth15, T. O. Meyer15, N. B. Mistry15, C. R. Ng15, E. Nordberg15, J. R. Patterson15, D. Peterson15, D. Riley15, J. G. Thayer15, P. G. Thies15, B. Valant-Spaight15, A. Warburton15, P. Avery16, C. Prescott16, A. I. Rubiera16, J. Yelton16, J. Zheng16, G. Brandenburg17, A. Ershov17, Y. S. Gao17, D. Y.-J. Kim17, R. Wilson17, T. E. Browder18, Y. Li18, J. L. Rodriguez18, H. Yamamoto18, T. Bergfeld19, B. I. Eisenstein19, J. Ernst19, G. E. Gladding19, G. D. Gollin19, R. M. Hans19, E. Johnson19, I. Karliner19, M. A. Marsh19, M. Palmer19, C. Plager19, C. Sedlack19, M. Selen19, J. J. Thaler19, J. Williams19, K. W. Edwards20,20b, R. Janicek21,21b, P. M. Patel21,21b, A. J. Sadoff22, R. Ammar23, A. Bean23, D. Besson23, R. Davis23, I. Kravchenko23, N. Kwak23, X. Zhao23, S. Anderson24, V. V. Frolov24, Y. Kubota24, S. J. Lee24, R. Mahapatra24, J. J. O'Neill24, R. Poling24, T. Riehle24, A. Smith24, J. Urheim24, S. Ahmed25, M. S. Alam25, S. B. Athar25, L. Jian25, L. Ling25, A. H. Mahmood25 §, M. Saleem25, S. Timm25, F. Wappler25, A. Anastassov26, J. E. Duboscq26, K. K. Gan26, C. Gwon26, T. Hart26, K. Honscheid26, D. Hufnagel26, H. Kagan26, R. Kass26, J. Lorenc26, T. K. Pedlar26, H. Schwarthoff26, E. von Toerne26, and M. M. Zoeller26 (CLEO Collaboration)
1University of Oklahoma, Norman, Oklahoma 73019
2Purdue University, West Lafayette, Indiana 47907
3University of Rochester, Rochester, New York 14627
4Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
5Southern Methodist University, Dallas, Texas 75275
6Syracuse University, Syracuse, New York 13244
7Vanderbilt University, Nashville, Tennessee 37235
8Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
9Wayne State University, Detroit, Michigan 48202
10California Institute of Technology, Pasadena, California 91125
11University of California, San Diego, La Jolla, California 92093
12University of California, Santa Barbara, California 93106
13Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
14University of Colorado, Boulder, Colorado 80309-0390
15Cornell University, Ithaca, New York 14853
16University of Florida, Gainesville, Florida 32611
17Harvard University, Cambridge, Massachusetts 02138
18University of Hawaii at Manoa, Honolulu, Hawaii 96822
19University of Illinois, Urbana-Champaign, Illinois 61801
20aCarleton University, Ottawa, Ontario, Canada K1S 5B6
20band the Institute of Particle Physics, Canada
21aMcGill University, Montréal, Québec, Canada H3A 2T8
21band the Institute of Particle Physics, Canada
22Ithaca College, Ithaca, New York 14850
23University of Kansas, Lawrence, Kansas 66045
24University of Minnesota, Minneapolis, Minnesota 55455
25State University of New York at Albany, Albany, New York 12222
26The Ohio State University, Columbus, Ohio 43210
Received 23 December 1999
In a sample of 19×106 produced B mesons, we have observed the decays B→ηK* and improved our previous measurements of B→η′K. The branching fractions we measure for these decay modes are B(B+→ηK*+) = (26.4-8.2+9.6±3.3)×10-6, B(B0→ηK*0) = (13.8-4.6+5.5±1.6)×10-6, B(B+→η′K+) = (80-9+10±7)×10-6, and B(B0→η′K0) = (89-16+18±9)×10-6. We have searched with comparable sensitivity for related decays and report upper limits for these branching fractions.
©2000 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.85.520
DOI: 10.1103/PhysRevLett.85.520
PACS: 13.25.Hw, 11.30.Er, 14.40.Nd
* Permanent address: Yonsei University, Seoul 120-749, Korea.
† Permanent address: University of Cincinnati, Cincinnati, OH 45221.
‡ Permanent address: Massachusetts Institute of Technology, Cambridge, MA 02139.
§ Permanent address: University of Texas–Pan American, Edinburg, TX 78539.
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