Phys. Rev. Lett.
86,
3730–3734
(2001)
Observation of the Ωc0 Charmed Baryon at CLEO
D. Cronin-Hennessy et al. (CLEO Collaboration)
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D. Cronin-Hennessy1, A. L. Lyon1, E. H. Thorndike1, V. Savinov2, T. E. Coan3, V. Fadeyev3, Y. S. Gao3, Y. Maravin3, I. Narsky3, R. Stroynowski3, J. Ye3, T. Wlodek3, M. Artuso4, R. Ayad4, C. Boulahouache4, K. Bukin4, E. Dambasuren4, S. Karamov4, G. Majumder4, G. C. Moneti4, R. Mountain4, S. Schuh4, T. Skwarnicki4, S. Stone4, J. C. Wang4, A. Wolf4, J. Wu4, S. Kopp5, M. Kostin5, A. H. Mahmood6, S. E. Csorna7, I. Danko7, K. W. McLean7, Z. Xu7, R. Godang8, G. Bonvicini9, D. Cinabro9, M. Dubrovin9, S. McGee9, G. J. Zhou9, E. Lipeles10, S. P. Pappas10, 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, D. M. Asner12, A. Eppich12, T. S. Hill12, R. J. Morrison12, R. A. Briere13, G. P. Chen13, A. Gritsan14, J. P. Alexander15, R. Baker15, C. Bebek15, B. E. Berger15, K. Berkelman15, F. Blanc15, V. Boisvert15, D. G. Cassel15, P. S. Drell15, J. E. Duboscq15, K. M. Ecklund15, R. Ehrlich15, A. D. Foland15, P. Gaidarev15, R. S. Galik15, L. Gibbons15, B. Gittelman15, S. W. Gray15, D. L. Hartill15, B. K. Heltsley15, P. I. Hopman15, L. Hsu15, C. D. Jones15, J. Kandaswamy15, D. L. Kreinick15, M. Lohner15, A. Magerkurth15, T. O. Meyer15, N. B. Mistry15, E. Nordberg15, M. Palmer15, J. R. Patterson15, D. Peterson15, D. Riley15, A. Romano15, J. G. Thayer15, D. Urner15, B. Valant-Spaight15, G. Viehhauser15, A. Warburton15, P. Avery16, C. Prescott16, A. I. Rubiera16, H. Stoeck16, J. Yelton16, G. Brandenburg17, A. Ershov17, D. Y.-J. Kim17, R. Wilson17, T. Bergfeld18, B. I. Eisenstein18, J. Ernst18, G. E. Gladding18, G. D. Gollin18, R. M. Hans18, E. Johnson18, I. Karliner18, M. A. Marsh18, C. Plager18, C. Sedlack18, M. Selen18, J. J. Thaler18, J. Williams18, K. W. Edwards19a,19b, R. Janicek20a,20b, P. M. Patel20a,20b, A. J. Sadoff21, R. Ammar22, A. Bean22, D. Besson22, X. Zhao22, S. Anderson23, V. V. Frolov23, Y. Kubota23, S. J. Lee23, R. Mahapatra23, J. J. O'Neill23, R. Poling23, T. Riehle23, A. Smith23, C. J. Stepaniak23, J. Urheim23, S. Ahmed24, M. S. Alam24, S. B. Athar24, L. Jian24, L. Ling24, M. Saleem24, S. Timm24, F. Wappler24, A. Anastassov25, E. Eckhart25, K. K. Gan25, C. Gwon25, T. Hart25, K. Honscheid25, D. Hufnagel25, H. Kagan25, R. Kass25, T. K. Pedlar25, H. Schwarthoff25, J. B. Thayer25, E. von Toerne25, M. M. Zoeller25, S. J. Richichi26, H. Severini26, P. Skubic26, A. Undrus26, S. Chen27, J. Fast27, J. W. Hinson27, J. Lee27, D. H. Miller27, E. I. Shibata27, I. P. J. Shipsey27, and V. Pavlunin27 (CLEO Collaboration)
1University of Rochester, Rochester, New York 14627
2Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
3Southern Methodist University, Dallas, Texas 75275
4Syracuse University, Syracuse, New York 13244
5University of Texas, Austin, Texas 78712
6University of Texas–Pan American, Edinburg, Texas 78539
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 Illinois, Urbana-Champaign, Illinois 61801
19aCarleton University, Ottawa, Ontario, Canada K1S 5B6
19band the Institute of Particle Physics, Canada
20aMcGill University, Montréal, Québec, Canada H3A 2T8
20band the Institute of Particle Physics, Canada
21Ithaca College, Ithaca, New York 14850
22University of Kansas, Lawrence, Kansas 66045
23University of Minnesota, Minneapolis, Minnesota 55455
24State University of New York at Albany, Albany, New York 12222
25The Ohio State University, Columbus, Ohio 43210
26University of Oklahoma, Norman, Oklahoma 73019
27Purdue University, West Lafayette, Indiana 47907
Received 11 October 2000; published in the issue dated 23 April 2001
The CLEO experiment at the CESR collider has used 13.7fb-1 of data to search for the production of the Ωc0 (css ground state) in e+e- collisions at √s≃10.6GeV. The modes used to study the Ωc0 are Ω-π+, Ω-π+π0, Ξ-K-π+π+, Ξ0K-π+, and Ω-π+π+π-. We observe a signal of 40.4±9.0(stat) events at a mass of 2694.6±2.6(stat)±1.9(syst)MeV/c2, for all modes combined.
© 2001 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.3730
DOI:
10.1103/PhysRevLett.86.3730
*Permanent address: Massachusetts Institute of Technology, Cambridge, MA 02139.
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