Phys. Rev. D
69,
052004
(2004)
[5 pages]
Measurement of the decay rate of Ξc0→pK-K-π+ relative to Ξc0→Ξ-π+
I. Danko et al. (CLEO Collaboration)
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I. Danko1, D. Cronin-Hennessy2, C. S. Park2, W. Park2, J. B. Thayer2, E. H. Thorndike2, T. E. Coan3, Y. S. Gao3, F. Liu3, R. Stroynowski3, M. Artuso4, C. Boulahouache4, S. Blusk4, E. Dambasuren4, O. Dorjkhaidav4, R. Mountain4, H. Muramatsu4, R. Nandakumar4, T. Skwarnicki4, S. Stone4, J. C. Wang4, A. H. Mahmood5, S. E. Csorna6, G. Bonvicini7, D. Cinabro7, M. Dubrovin7, A. Bornheim8, E. Lipeles8, S. P. Pappas8, A. Shapiro8, W. M. Sun8, A. J. Weinstein8, R. A. Briere9, G. P. Chen9, T. Ferguson9, G. Tatishvili9, H. Vogel9, M. E. Watkins9, N. E. Adam10, J. P. Alexander10, K. Berkelman10, V. Boisvert10, D. G. Cassel10, J. E. Duboscq10, K. M. Ecklund10, R. Ehrlich10, R. S. Galik10, L. Gibbons10, B. Gittelman10, S. W. Gray10, D. L. Hartill10, B. K. Heltsley10, L. Hsu10, C. D. Jones10, J. Kandaswamy10, D. L. Kreinick10, V. E. Kuznetsov10, A. Magerkurth10, H. Mahlke-Krüger10, T. O. Meyer10, N. B. Mistry10, J. R. Patterson10, T. K. Pedlar10, D. Peterson10, J. Pivarski10, S. J. Richichi10, D. Riley10, A. J. Sadoff10, H. Schwarthoff10, M. R. Shepherd10, J. G. Thayer10, D. Urner10, T. Wilksen10, A. Warburton10, M. Weinberger10, S. B. Athar11, P. Avery11, L. Breva-Newell11, V. Potlia11, H. Stoeck11, J. Yelton11, B. I. Eisenstein12, G. D. Gollin12, I. Karliner12, N. Lowrey12, C. Plager12, C. Sedlack12, M. Selen12, J. J. Thaler12, J. Williams12, K. W. Edwards13, D. Besson14, K. Y. Gao15, D. T. Gong15, Y. Kubota15, S. Z. Li15, R. Poling15, A. W. Scott15, A. Smith15, C. J. Stepaniak15, J. Urheim15, Z. Metreveli16, K. K. Seth16, A. Tomaradze16, P. Zweber16, J. Ernst17, K. Arms18, E. Eckhart18, K. K. Gan18, C. Gwon18, H. Severini19, P. Skubic19, S. A. Dytman20, J. A. Mueller20, S. Nam20, V. Savinov20, G. S. Huang21, D. H. Miller21, V. Pavlunin21, B. Sanghi21, E. I. Shibata21, and I. P. J. Shipsey21
1Rensselaer Polytechnic Institute, Troy, New York 12180, USA
2University of Rochester, Rochester, New York 14627, USA
3Southern Methodist University, Dallas, Texas 75275, USA
4Syracuse University, Syracuse, New York 13244, USA
5University of Texas–Pan American, Edinburg, Texas 78539, USA
6Vanderbilt University, Nashville, Tennessee 37235, USA
7Wayne State University, Detroit, Michigan 48202, USA
8California Institute of Technology, Pasadena, California 91125, USA
9Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
10Cornell University, Ithaca, New York 14853, USA
11University of Florida, Gainesville, Florida 32611, USA
12University of Illinois, Urbana-Champaign, Illinois 61801, USA
13Carleton University, Ottawa, Ontario, Canada K1S 5B6 and the Institute of Particle Physics, Canada
14University of Kansas, Lawrence, Kansas 66045, USA
15University of Minnesota, Minneapolis, Minnesota 55455, USA
16Northwestern University, Evanston, Illinois 60208, USA
17State University of New York at Albany, Albany, New York 12222, USA
18Ohio State University, Columbus, Ohio 43210, USA
19University of Oklahoma, Norman, Oklahoma 73019, USA
20University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
21Purdue University, West Lafayette, Indiana 47907, USA
(CLEO Collaboration)
Received 3 September 2003; revised 16 January 2004; published 29 March 2004
Using the CLEO III detector at CESR, we have measured the branching ratio of the decay Ξc0→pK-K-π+ relative to Ξc0→Ξ-π+. We find B(Ξc0→pK-K-π+)/B(Ξc0→Ξ-π+)=0.35±0.06(stat)±0.03(syst). In the resonant substructure of this mode, we find evidence for Ξc0 decays to pK*̅ (892)0K-, and measure B(Ξc0→pK*̅ (892)0K-)×B(K*̅ (892)0→K-π+)/B(Ξc0→Ξ-π+)=0.14±0.03(stat)±0.01(syst) and B(Ξc0→pK-K-π+)/B(Ξc0→Ξ-π+)=0.21±0.04(stat)±0.02(syst) for the non-K*̅ (892)0Ξc0→pK-K-π+ decays.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.69.052004
DOI:
10.1103/PhysRevD.69.052004
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