Phys. Rev. Lett.
84,
5283–5287
(2000)
Study of Exclusive Radiative B Meson Decays
T. E. Coan et al. (CLEO Collaboration)
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T. E. Coan1, V. Fadeyev1, Y. Maravin1, I. Narsky1, R. Stroynowski1, J. Ye1, T. Wlodek1, M. Artuso2, R. Ayad2, C. Boulahouache2, K. Bukin2, E. Dambasuren2, S. Karamov2, S. Kopp2, G. Majumder2, G. C. Moneti2, R. Mountain2, S. Schuh2, T. Skwarnicki2, S. Stone2, G. Viehhauser2, J. C. Wang2, A. Wolf2, J. Wu2, S. E. Csorna3, I. Danko3, K. W. McLean3, Sz. Márka3, Z. Xu3, R. Godang4, K. Kinoshita4,*, I. C. Lai4, S. Schrenk4, G. Bonvicini5, D. Cinabro5, L. P. Perera5, G. J. Zhou5, G. Eigen6, E. Lipeles6, M. Schmidtler6, A. Shapiro6, W. M. Sun6, A. J. Weinstein6, F. Würthwein6,†, D. E. Jaffe7, G. Masek7, H. P. Paar7, E. M. Potter7, S. Prell7, V. Sharma7, D. M. Asner8, A. Eppich8, T. S. Hill8, D. J. Lange8, R. J. Morrison8, R. A. Briere9, B. H. Behrens10, W. T. Ford10, A. Gritsan10, J. Roy10, J. G. Smith10, J. P. Alexander11, R. Baker11, C. Bebek11, B. E. Berger11, K. Berkelman11, F. Blanc11, V. Boisvert11, D. G. Cassel11, M. Dickson11, P. S. Drell11, K. M. Ecklund11, R. Ehrlich11, A. D. Foland11, P. Gaidarev11, L. Gibbons11, B. Gittelman11, S. W. Gray11, D. L. Hartill11, B. K. Heltsley11, P. I. Hopman11, C. D. Jones11, D. L. Kreinick11, M. Lohner11, A. Magerkurth11, T. O. Meyer11, N. B. Mistry11, E. Nordberg11, J. R. Patterson11, D. Peterson11, D. Riley11, J. G. Thayer11, P. G. Thies11, B. Valant-Spaight11, A. Warburton11, P. Avery12, C. Prescott12, A. I. Rubiera12, J. Yelton12, J. Zheng12, G. Brandenburg13, A. Ershov13, Y. S. Gao13, D. Y.-J. Kim13, R. Wilson13, T. E. Browder14, Y. Li14, J. L. Rodriguez14, H. Yamamoto14, T. Bergfeld15, B. I. Eisenstein15, J. Ernst15, G. E. Gladding15, G. D. Gollin15, R. M. Hans15, E. Johnson15, I. Karliner15, M. A. Marsh15, M. Palmer15, C. Plager15, C. Sedlack15, M. Selen15, J. J. Thaler15, J. Williams15, K. W. Edwards16a,16b, R. Janicek17a,17b, P. M. Patel17a,17b, A. J. Sadoff18, R. Ammar19, A. Bean19, D. Besson19, R. Davis19, N. Kwak19, X. Zhao19, S. Anderson20, V. V. Frolov20, Y. Kubota20, S. J. Lee20, R. Mahapatra20, J. J. O'Neill20, R. Poling20, T. Riehle20, A. Smith20, J. Urheim20, S. Ahmed21, M. S. Alam21, S. B. Athar21, L. Jian21, L. Ling21, A. H. Mahmood21,‡, M. Saleem21, S. Timm21, F. Wappler21, A. Anastassov22, J. E. Duboscq22, K. K. Gan22, C. Gwon22, T. Hart22, K. Honscheid22, D. Hufnagel22, H. Kagan22, R. Kass22, T. K. Pedlar22, H. Schwarthoff22, J. B. Thayer22, E. von Toerne22, M. M. Zoeller22, S. J. Richichi23, H. Severini23, P. Skubic23, A. Undrus23, S. Chen24, J. Fast24, J. W. Hinson24, J. Lee24, N. Menon24, D. H. Miller24, E. I. Shibata24, I. P. J. Shipsey24, V. Pavlunin24, D. Cronin-Hennessy25, Y. Kwon25,§, A. L. Lyon25, E. H. Thorndike25, C. P. Jessop26, H. Marsiske26, M. L. Perl26, V. Savinov26, D. Ugolini26, and X. Zhou26 (CLEO Collaboration)
1Southern Methodist University, Dallas, Texas 75725
2Syracuse University, Syracuse, New York 13244
3Vanderbilt University, Nashville, Tennessee 37235
4Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
5Wayne State University, Detroit, Michigan 48202
6California Institute of Technology, Pasadena, California 91125
7University of California, San Diego, La Jolla, California 92093
8University of California, Santa Barbara, California 93106
9Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
10University of Colorado, Boulder, Colorado 80309-0390
11Cornell University, Ithaca, New York 14853
12University of Florida, Gainesville, Florida 32611
13Harvard University, Cambridge, Massachusetts 02138
14University of Hawaii at Manoa, Honolulu, Hawaii 96822
15University of Illinois, Urbana-Champaign, Illinois 61801
16aCarleton University, Ottawa, Ontario, Canada K1S 5B6
16band the Institute of Particle Physics, Canada
17aMcGill University, Montréal, Québec, Canada H3A 2T8
17band the Institute of Particle Physics, Canada
18Ithaca College, Ithaca, New York 14850
19University of Kansas, Lawrence, Kansas 66045
20University of Minnesota, Minneapolis, Minnesota 55455
21State University of New York at Albany, Albany, New York 12222
22Ohio State University, Columbus, Ohio 43210
23University of Oklahoma, Norman, Oklahoma 73019
24Purdue University, West Lafayette, Indiana 47907
25University of Rochester, Rochester, New York 14627
26Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
Received 23 December 1999; revised 23 February 2000; published in the issue dated 5 June 2000
We have studied exclusive, radiative B meson decays to charmless mesons in 9.7×106 BB̅ decays accumulated with the CLEO detector. We measure B(B0→K*0(892)γ) = (4.55-0.68+0.72±0.34)×10-5 and B(B+→K*+(892)γ) = (3.76-0.83+0.89±0.28)×10-5. We have searched for CP asymmetry in B→K*(892)γ decays and measure ACP = +0.08±0.13±0.03. We report the first observation of B→K2*(1430)γ decays with a branching fraction of (1.66-0.53+0.59±0.13)×10-5. No evidence for the decays B→ργ and B0→ωγ is found and we limit B(B→(ρ/ω)γ)/B(B→K*(892)γ)<0.32 at 90% C.L.
© 2000 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.5283
DOI:
10.1103/PhysRevLett.84.5283
PACS:
13.25.Hw, 11.30.Er, 13.40.Hq
*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. §Permanent address: Yonsei University, Seoul 120-749, Korea.
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