Using data collected by the fixed target Fermilab experiment FOCUS, we present several first measurements for the semi-leptonic decay D-0 --> (K) over bar (0)pi(-)mu(+)nu. Using a model that includes a (K) over bar (0)pi(-) s-wave component, we measure the form factor ratios to be r(v) = 1.71+/-0.68+/-0.34 and r(2) = 0.91+/-0.37+/-0.10 and the s-wave amplitude to be A = 0.35+/-0.22+/-0.05 GeV-1. Finally, we measure the vector semileptonic branching ratio Gamma(D-0-->K*(892)(-)mu(+)nu)/Gamma(D-0-->(K) over bar (0)pi(-)pi(+))= 0.337+/-0.034+/-0.013.
Analysis of the semileptonic decay D-0 ->(K)over-bar(0)pi(-)mu(+)nu / 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. 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. - 607:1-2(2005), pp. 67-77.
Analysis of the semileptonic decay D-0 ->(K)over-bar(0)pi(-)mu(+)nu
F. Leveraro;G. Gianini;
2005
Abstract
Using data collected by the fixed target Fermilab experiment FOCUS, we present several first measurements for the semi-leptonic decay D-0 --> (K) over bar (0)pi(-)mu(+)nu. Using a model that includes a (K) over bar (0)pi(-) s-wave component, we measure the form factor ratios to be r(v) = 1.71+/-0.68+/-0.34 and r(2) = 0.91+/-0.37+/-0.10 and the s-wave amplitude to be A = 0.35+/-0.22+/-0.05 GeV-1. Finally, we measure the vector semileptonic branching ratio Gamma(D-0-->K*(892)(-)mu(+)nu)/Gamma(D-0-->(K) over bar (0)pi(-)pi(+))= 0.337+/-0.034+/-0.013.
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