2000
article
Observation of the Omega 0(c) charmed baryon at CLEO
S. A. S. Ahmed, D. L. Hartill, J. J. O’Neill, A. Ershov, H. Schwarthoff, Chris J. Bebek, N. Kwak, James Elliot Fast, Brian K. Heltsley, Andrei V. Gritsan, Ilya V. Narsky, H. P. Paar, Alexander Undrus, D. Cronin-Hennessy, L. P. Perera, F. R. Wappler, S. W. Gray, C.L. Plager, T. Riehle, I. Karliner, V. Sharma, G. W. Brandenburg, B. H. Behrens, K.W. McLean, Haipeng An, X. Zhao, R. Stroynowski, R. D. Kass, E. Dambasuren, R. Godang, G.P. Chen, Roy A. Briere, E.E. Johnson, K. W. Edwards, J.E. Duboscq, G. H. A. Viehhauser, A. Wolf, B. E. Berger, D. Urner, L. Ling, A. I. Rubiera, Craig Prescott, J. Lee, A. L. Lyon, Nari B. Mistry, D. G. Cassel, I. P. J. Shipsey, A. Eppich, S. McGee, Elliot Lipeles, Raj Wilson, S. P. Pappas, Robert Jay Morrison, Terry L. Hart, E. H. Thorndike, Steven C. Timm, S. Schuh, V. Boisvert, M. Dickson, Rupak Mahapatra, CHRIS D. JONES, G. Bonvicini, Edward I. Shibata, R. Mountain, T.K. Pedlar, A. Anastassov, Victor Pavlunin, P. Avery, X. Y. Zhou, L. Jian, H. Kagan, J. Roy, C. Sedlack, Sydney Anderson, A. J. Sadoff, Sergey Karamov, James G. Smith, T. E. Coan, Steven E. Csorna, P. Skubic, M. L. Perl, G. C. Moneti, C. Boulahouache, Y. Li, G.J. Zhou, P.I. Hopman, S. J. Richichi, S. Schrenk, Sheldon L. Stone, T. Skwarnicki, Y. Maravin, P.B Gaidarev, W. M. Sun, A. J. R. Weinstein, Raymond E. Davis, K. Kinoshita, J.C. Wang, I. C. Lai, E. A. Eckhart, J. B. Thayer, Michael Löhner, C. J. Stepaniak, H. Severini, T. Wlodek, Frank Wuerthwein, David A. Peterson, B. Valant-Spaight, J. W. Hinson, G. E. Gladding, Muzammal Saleem, R. Ayad, R. M. Hans, M. Zoeller, T. Bergfeld, A.J. Magerkurth, J. P. Zheng, Bob I. Eisenstein, Emery Nordberg, J. A. Ernst, E. M. Potter, I. Dankó, Thomas E. Browder, D. Besson, S.J. Lee, Jon Urheim, David J. Riley, D.M. Asner, C. Jessop, V. V. Frolov, Romain Ould Ammar, H. Yamamoto, A. Warburton, S. Márka, Zhen-Ni Xu, S. Köpp, Theresa Schmaltz Hill, W. T. Ford, Richard D. Ehrlich, Justin Williams, P. M. Patel, A. Smith, Jorge L. Rodriguez, J. Ye, Chul S. Gwon, L. Gibbons, D. E. Jaffe, D. Cinabro, R. Janicek, G. D. Gollin, G. Majumder, Persis S. Drell, Ronald A. Poling, A.H. Mahmood, M. Śchmidtler, S. B. Athar, K. Honscheid, A. Bean, V. Savinov, J.G. Thayer, V. Fadeyev, M. Selen, J. J. Thaler, K. M. Ecklund, Robert G. V. Baker, B. Gittelman, E. von Toerne, Y. Kubota, Y. Gao, M. Artuso, K. K. Gan, K. Bukin, David Harry Miller, S. Chen, Alexander Shapiro, M. J. Palmer, G. E. Masek, Karl Berkelman, T. O. Meyer, D.Y.J. Kim, Dirk Hufnagel, F. Blanc, A. Foland, D. L. Kreinick, John M. Yelton
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Le résumé fourni par la source
The CLEO detector at the CESR collider has used 13.7 fb^{-1} to search for the production of Omega_c (css-ground state) in e^{+}e^{-} collisions at sqrt{s} = 10.6 GeV The modes used to study the Omega_c are Omega- pi+, Omega- pi+ pi0, Xi- K- pi+ pi+, Xi0 K- pi+, and Omega- pi+ pi+ pi-. We observe 40.4 +- 9.0(stat) combined events at a mass of 2694.6 +- 2.6(stat) +- 2.4(syst) MeV. We have also measured the \\sigma * Br of the above modes for xp > 0.5 to be 11.3 +- 3.9 +- 2.3 fb, 47.6 +- 18.0 +- 2.8 fb, 45.1 +- 23.2 +- 4.1 fb, 18.2 +- 10.6 +- 3.8 fb, and <5.1 fb @ 90 % CL, respectively.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Particle physics theoretical and experimental studiesParticle Accelerators and Free-Electron LasersSuperconducting Materials and Applications