2001
article
Measurement of Natural Widths of Sigma-c-0 and Sigma-c-++ Baryons
J.M. Link, P.M. Yager, J C Anjos, I Bediaga, C Gobel, A.A. Machado, J Magnin, A. Massafferri, J.M. de Miranda, I M Pepe, E. Polycarpo, A dos Reis, S Carrillo, E Casimiro, E Cuautle, A. Sanchez Hernandez, C Uribe, F Vazquez, L Agostino, L Cinquini, J P Cumalat, B. O'Reilly, I. Segoni, J N Butler, H W K Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L. Garren, E. Gottschalk, Kasper P.H., A.E. Kreymer, R. Kutschke, M. Wang, L Benussi, M. Bertani, S Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B Ko, Kwak J.W., K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A Cerutti, P. D'Angelo, M. DiCorato, P Dini, L. Edera, S. Erba, M G Giammarchi, P. Inzani, F. Leveraro, S Malvezzi, D L Menasce, M. Mezzadri, L Moroni, D Pedrini, C. Pontoglio, F Prelz, M Rovere, S. Sala, T. F. Davenport, V. Arena, G. Boca, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, D.L. Pegna, S.P. Ratti, C Riccardi, P Vitulo, H. Hernandez, A.M. Lopez, E. Luiggi, H. Mendez, A. Paris, J. E. Ramírez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, A. D. Bryant, D. Engh, M. Hosack, W E Johns, M. Nehring, P D Sheldon, K M Stenson, E.W. Vaandering, M. Webster, M. Sheaff, Germano BONOMI
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Le résumé fourni par la source
In this paper we present a measurement of the natural widths of $\\Sigma_c^0$ and $\\Sigma_c^{++}$. Using data from the FOCUS experiment, we find $\\Gamma(\\Sigma_c^0) = 1.55 +0.41/-0.37 \\pm 0.38$ MeV/c^2 and $\\Gamma(\\Sigma_c^0) = 2.05 +0.41/-0.38 \\pm 0.38$ MeV/c^2. The first errors are statistical, the second systematic. These results are obtained with a sample of 913 $\\Sigma_c^0 \\to \\Lambda_c^+ \\pi^-$ decays and 1110 $\\Sigma_c^++ \\to \\Lambda_c^+ \\pi^+$ decays. These results are compared with recent theoretical predictions. PACS numbers: 14.20.Lq 13.30Eg
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Les sujets associés
Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsBenford’s Law and Fraud Detection