We present a K pi mass spectrum analysis of the four-body semileptonic charm decay D+ -> K(-)pi(+)mu(+)nu in the range of 0.65 GeV/c(2) < m(K pi) < 1.5 GeV/c(2). We observe a non-resonant contribution of 5.30 +/- 0.74(-0.96)(+0.99)% with respect to the total D+ -> K(-)pi(+)mu(+)nu decay. For the K*(892)(0) resonance, we obtain a mass of 895.41 +/- 0.32(-0.43)(0.35) MeV/c(2) a width of 47.79 +/- 0.86(-1.06)(+0.32) MeV/c(2) and a Blatt-Weisskopf damping factor parameter of 3.96 +/- 0.54(-0.90)(+1.31) GeV-1. We also report 90% CL upper limits of 4% and 0.64% for the branching ratios Gamma(D+->(K) over bar*(1680)(0)mu(+)nu)/Gamma(D+-> K(-)pi(+)mu(+)nu) and Gamma(D+ -> (K) over bar*(0)(1430)(0)mu(+)nu)/Gamma(D+ -> K(-)pi(+)mu(+)nu), respectively.
Hadronic mass spectrum analysis of D+-> K-pi(+)mu(+)v decay and measurement of the K*(892)(0) mass and width / 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, E. 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. - 621:1-2(2005), pp. 72-80.
Hadronic mass spectrum analysis of D+-> K-pi(+)mu(+)v decay and measurement of the K*(892)(0) mass and width
E. Leveraro;G. Gianini;
2005
Abstract
We present a K pi mass spectrum analysis of the four-body semileptonic charm decay D+ -> K(-)pi(+)mu(+)nu in the range of 0.65 GeV/c(2) < m(K pi) < 1.5 GeV/c(2). We observe a non-resonant contribution of 5.30 +/- 0.74(-0.96)(+0.99)% with respect to the total D+ -> K(-)pi(+)mu(+)nu decay. For the K*(892)(0) resonance, we obtain a mass of 895.41 +/- 0.32(-0.43)(0.35) MeV/c(2) a width of 47.79 +/- 0.86(-1.06)(+0.32) MeV/c(2) and a Blatt-Weisskopf damping factor parameter of 3.96 +/- 0.54(-0.90)(+1.31) GeV-1. We also report 90% CL upper limits of 4% and 0.64% for the branching ratios Gamma(D+->(K) over bar*(1680)(0)mu(+)nu)/Gamma(D+-> K(-)pi(+)mu(+)nu) and Gamma(D+ -> (K) over bar*(0)(1430)(0)mu(+)nu)/Gamma(D+ -> K(-)pi(+)mu(+)nu), respectively.
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