We present an analysis of the decay D-0 -> K(+)pi(-) based on FOCUS data. From a sample of 234 signal events, we find a branching ration of Gamma(D-0 -> K(+)pi(-))/Gamma(D-0 -> K(-)pi(+)) = (0.429(-0.061)(+0.063) +/- 0.027)% under the assumptions of no mixing and no CP violation. Allowing for CP violation, we find a branching ration of (0.429 +/- 0.063 +/- 0.028)% and a CP asymmetry of 0.18 +/- 0.04. The branching ratio for the case of mixing with no CP violation is (0.381(-0.163)(+0.167) +/- 0.092)%. We also present limits on charm mixing.
Measurement of the doubly Cabibbo suppressed decay D-0 K+pi(-) and a search for charm mixing / 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.C. 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, K. Stenson, J.N. Butler, Falso Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, 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.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. Di Corato, P. Dini, L. Edera, S. Erba, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, D.L. Pegna, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, H. Mendez, A. Paris, J. Quinones, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, E. Luiggi, J.E. Moore, M. Nehring, P.D. Sheldon, E.W. Vaandering, M. Webster, M. Sheaff. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 618:1-4(2005), pp. 23-33.
Measurement of the doubly Cabibbo suppressed decay D-0 K+pi(-) and a search for charm mixing
F. Leveraro;G. Gianini;
2005
Abstract
We present an analysis of the decay D-0 -> K(+)pi(-) based on FOCUS data. From a sample of 234 signal events, we find a branching ration of Gamma(D-0 -> K(+)pi(-))/Gamma(D-0 -> K(-)pi(+)) = (0.429(-0.061)(+0.063) +/- 0.027)% under the assumptions of no mixing and no CP violation. Allowing for CP violation, we find a branching ration of (0.429 +/- 0.063 +/- 0.028)% and a CP asymmetry of 0.18 +/- 0.04. The branching ratio for the case of mixing with no CP violation is (0.381(-0.163)(+0.167) +/- 0.092)%. We also present limits on charm mixing.
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