Phys. Rev. Lett.
89,
222001
(2002)
[5 pages]
Measurement of B(D+→K̅ *0l+νl)
G. Brandenburg et al. CLEO Collaboration
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G. Brandenburg1, A. Ershov1, D. Y.-J. Kim1, R. Wilson1, K. Benslama2, B. I. Eisenstein2, J. Ernst2, G. D. Gollin2, R. M. Hans2, I. Karliner2, N. Lowrey2, M. A. Marsh2, C. Plager2, C. Sedlack2, M. Selen2, J. J. Thaler2, J. Williams2, K. W. Edwards3, R. Ammar4, D. Besson4, X. Zhao4, S. Anderson5, V. V. Frolov5, Y. Kubota5, S. J. Lee5, S. Z. Li5, R. Poling5, A. Smith5, C. J. Stepaniak5, J. Urheim5, S. Ahmed6, M. S. Alam6, L. Jian6, M. Saleem6, F. Wappler6, E. Eckhart7, K. K. Gan7, C. Gwon7, T. Hart7, K. Honscheid7, D. Hufnagel7, H. Kagan7, R. Kass7, T. K. Pedlar7, J. B. Thayer7, E. von Toerne7, T. Wilksen7, M. M. Zoeller7, S. J. Richichi8, H. Severini8, P. Skubic8, S. A. Dytman9, S. Nam9, V. Savinov9, S. Chen10, J. W. Hinson10, J. Lee10, D. H. Miller10, V. Pavlunin10, E. I. Shibata10, I. P. J. Shipsey10, D. Cronin-Hennessy11, A. L. Lyon11, C. S. Park11, W. Park11, E. H. Thorndike11, T. E. Coan12, Y. S. Gao12, F. Liu12, Y. Maravin12, I. Narsky12, R. Stroynowski12, J. Ye12, M. Artuso13, C. Boulahouache13, K. Bukin13, E. Dambasuren13, R. Mountain13, T. Skwarnicki13, S. Stone13, J. C. Wang13, A. H. Mahmood14, S. E. Csorna15, I. Danko15, Z. Xu15, G. Bonvicini16, D. Cinabro16, M. Dubrovin16, S. McGee16, A. Bornheim17, E. Lipeles17, S. P. Pappas17, A. Shapiro17, W. M. Sun17, A. J. Weinstein17, G. Masek18, H. P. Paar18, R. Mahapatra19, R. A. Briere20, G. P. Chen20, T. Ferguson20, G. Tatishvili20, H. Vogel20, N. E. Adam21, J. P. Alexander21, C. Bebek21, K. Berkelman21, F. Blanc21, V. Boisvert21, D. G. Cassel21, P. S. Drell21, J. E. Duboscq21, K. M. Ecklund21, R. Ehrlich21, L. Gibbons21, B. Gittelman21, S. W. Gray21, D. L. Hartill21, B. K. Heltsley21, L. Hsu21, C. D. Jones21, J. Kandaswamy21, D. L. Kreinick21, A. Magerkurth21, H. Mahlke-Krüger21, T. O. Meyer21, N. B. Mistry21, E. Nordberg21, M. Palmer21, J. R. Patterson21, D. Peterson21, J. Pivarski21, D. Riley21, A. J. Sadoff21, H. Schwarthoff21, M. R. Shepherd21, J. G. Thayer21, D. Urner21, B. Valant-Spaight21, G. Viehhauser21, A. Warburton21, M. Weinberger21, S. B. Athar22, P. Avery22, H. Stoeck22, and J. Yelton22 (CLEO Collaboration)
1Harvard University, Cambridge, Massachusetts 02138
2University of Illinois, Urbana-Champaign, Illinois 61801
3Carleton University, Ottawa, Ontario, Canada K1S 5B6 and the Institute of Particle Physics, Canada M5S 1A7
4University of Kansas, Lawrence, Kansas 66045
5University of Minnesota, Minneapolis, Minnesota 55455
6State University of New York at Albany, Albany, New York 12222
7Ohio State University, Columbus, Ohio 43210
8University of Oklahoma, Norman, Oklahoma 73019
9University of Pittsburgh, Pittsburgh, Pennsylvania 15260
10Purdue University, West Lafayette, Indiana 47907
11University of Rochester, Rochester, New York 14627
12Southern Methodist University, Dallas, Texas 75275
13Syracuse University, Syracuse, New York 13244
14University of Texas–Pan American, Edinburg, Texas 78539
15Vanderbilt University, Nashville, Tennessee 37235
16Wayne State University, Detroit, Michigan 48202
17California Institute of Technology, Pasadena, California 91125
18University of California–San Diego, La Jolla, California 92093
19University of California, Santa Barbara, California 93106
20Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
21Cornell University, Ithaca, New York 14853
22University of Florida, Gainesville, Florida 32611
Received 12 March 2002; published 11 November 2002
Using 13.53 fb-1 of CLEO data, we have measured the ratios of the branching fractions Re+,Rμ+ and the combined branching fraction ratio Rl+, defined by Rl+=[B(D+→K̅ *0l+νl)]/[B(D+→K-π+π+)]. We find Re+=0.74±0.04±0.05, Rμ+=0.72±0.10±0.05, and Rl+=0.74±0.04±0.05, where the first and second errors are statistical and systematic, respectively. The known branching fraction B(D+→K-π+π+) leads to B(D+→K̅ *0e+νe)=(6.7±0.4±0.5±0.4)%, B(D+→K̅ *0μ+νμ)=(6.5±0.9±0.5±0.4)%, and B(D+→K̅ *0l+νl)=(6.7±0.4±0.5±0.4)%, where the third error is due to the uncertainty in B(D+→K-π+π+).
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.222001
DOI:
10.1103/PhysRevLett.89.222001
PACS:
13.20.Fc, 14.40.Lb, 12.39.Hg
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