Phys. Rev. Lett.
93,
111801
(2004)
[6 pages]
First Observation and Dalitz Analysis of the D0→KS0ηπ0 Decay
P. Rubin et al. CLEO Collaboration
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P. Rubin1, B. I. Eisenstein2, G. D. Gollin2, I. Karliner2, N. Lowrey2, P. Naik2, C. Sedlack2, M. Selen2, J. J. Thaler2, J. Williams2, K. W. Edwards3, D. Besson4, K. Y. Gao5, D. T. Gong5, Y. Kubota5, S. Z. Li5, R. Poling5, A. W. Scott5, A. Smith5, C. J. Stepaniak5, J. Urheim5, Z. Metreveli6, K. K. Seth6, A. Tomaradze6, P. Zweber6, J. Ernst7, K. Arms8, E. Eckhart8, K. K. Gan8, H. Severini9, P. Skubic9, D. M. Asner10, S. A. Dytman10, S. Mehrabyan10, J. A. Mueller10, V. Savinov10, Z. Li11, A. Lopez11, H. Mendez11, J. Ramirez11, G. S. Huang12, D. H. Miller12, V. Pavlunin12, B. Sanghi12, E. I. Shibata12, I. P. J. Shipsey12, G. S. Adams13, M. Chasse13, J. P. Cummings13, I. Danko13, J. Napolitano13, D. Cronin-Hennessy14, C. S. Park14, W. Park14, J. B. Thayer14, E. H. Thorndike14, T. E. Coan15, Y. S. Gao15, F. Liu15, R. Stroynowski15, M. Artuso16, C. Boulahouache16, S. Blusk16, J. Butt16, E. Dambasuren16, O. Dorjkhaidav16, N. Menaa16, R. Mountain16, H. Muramatsu16, R. Nandakumar16, R. Redjimi16, R. Sia16, T. Skwarnicki16, S. Stone16, J. C. Wang16, K. Zhang16, A. H. Mahmood17, S. E. Csorna18, G. Bonvicini19, D. Cinabro19, M. Dubrovin19, A. Bornheim20, E. Lipeles20, S. P. Pappas20, A. J. Weinstein20, R. A. Briere21, G. P. Chen21, T. Ferguson21, G. Tatishvili21, H. Vogel21, M. E. Watkins21, N. E. Adam22, J. P. Alexander22, K. Berkelman22, D. G. Cassel22, J. E. Duboscq22, K. M. Ecklund22, R. Ehrlich22, L. Fields22, R. S. Galik22, L. Gibbons22, B. Gittelman22, R. Gray22, S. W. Gray22, D. L. Hartill22, B. K. Heltsley22, D. Hertz22, L. Hsu22, C. D. Jones22, J. Kandaswamy22, D. L. Kreinick22, V. E. Kuznetsov22, H. Mahlke-Krüger22, T. O. Meyer22, P. U. E. Onyisi22, J. R. Patterson22, T. K. Pedlar22, D. Peterson22, J. Pivarski22, D. Riley22, J. L. Rosner22,*, A. Ryd22, A. J. Sadoff22, H. Schwarthoff22, M. R. Shepherd22, W. M. Sun22, J. G. Thayer22, D. Urner22, T. Wilksen22, M. Weinberger22, S. B. Athar23, P. Avery23, L. Breva-Newell23, R. Patel23, V. Potlia23, H. Stoeck23, and J. Yelton23 (CLEO Collaboration)
1George Mason University, Fairfax, Virginia 22030, USA
2University of Illinois, Urbana-Champaign, Illinois 61801, USA
3Carleton University, Ottawa, Ontario, Canada K1S 5B6, and the Institute of Particle Physics, Canada
4University of Kansas, Lawrence, Kansas 66045, USA
5University of Minnesota, Minneapolis, Minnesota 55455, USA
6Northwestern University, Evanston, Illinois 60208, USA
7State University of New York at Albany, Albany, New York 12222, USA
8Ohio State University, Columbus, Ohio 43210, USA
9University of Oklahoma, Norman, Oklahoma 73019, USA
10University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
11University of Puerto Rico, Mayaguez, Puerto Rico 00681
12Purdue University, West Lafayette, Indiana 47907, USA
13Rensselaer Polytechnic Institute, Troy, New York 12180, USA
14University of Rochester, Rochester, New York 14627, USA
15Southern Methodist University, Dallas, Texas 75275, USA
16Syracuse University, Syracuse, New York 13244, USA
17University of Texas - Pan American, Edinburg, Texas 78539, USA
18Vanderbilt University, Nashville, Tennessee 37235, USA
19Wayne State University, Detroit, Michigan 48202, USA
20California Institute of Technology, Pasadena, California 91125, USA
21Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
22Cornell University, Ithaca, New York 14853
23University of Florida, Gainesville, Florida 32611, USA
Received 4 May 2004; published 9 September 2004
Using 9.0 fb-1 of integrated luminosity in e+e- collisions near the Υ(4S) mass collected with the CLEO II.V detector we report the first observation of the decay D0→KS0ηπ0. We measure the ratio of branching fractions, BR(D0→KS0ηπ0)/BR(D0→KS0π0)=0.46±0.07±0.06. We perform a Dalitz analysis of 155 selected D0→KS0ηπ0 candidates and find leading contributions from a0(980)KS0 and K*(892)η intermediate states.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.111801
DOI:
10.1103/PhysRevLett.93.111801
PACS:
13.25.Ft, 13.25.Jx, 14.40.Aq, 14.40.Lb
*On leave of absence from University of Chicago.
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