We report on the first statistically significant observation of the vector meson Cabibbo suppressed semileptonic decay D+ → rho0 mu+ nu. We measure the branching ratio of the decay mode D+ → rho0 mu+ nu (plus possible unobserved gamma from D+ → eta′ mu + nu, eta′ → gamma rho0) with respect to the decay mode D+ -> antiK*0 mu+ nu to be BR(D+ -> rho0 mu+ nu)/BR(D+ -> antiK*0 mu+ nu) = 0.079 +/-0.019(stat) +/-0.013(sys). Data were collected by Fermilab photoproduction experiement E687
Observation of the vector meson Cabibbo suppressed decay D+ → rho0 mu+ nu / P.L. Frabetti, H.W.K. Cheung, J.P. Cumalat, C. Dallapiccola, J.F. Ginkel, W.E. Johns, M.S. Nehring, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S.A. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R.W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J.M. Bishoph, N.M. Cason, C.J. Kennedy, G.N. Kim T.F. Lin, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, V. Arena, G. Boca, C. Castoldi, G. Gianini, S.P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A. Lopez, G.P. Grim, V.S. Paolone, P.M. Yager, J.R. Wilson, P.D. Sheldon, F. Davenport, K. Danyo, T. Handler, B.G. Cheon, J.S. Kang, K.Y. Kim. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 391:1-2(1997 Jan 09), pp. 235-242. [10.1016/S0370-2693(96)01548-1]
Observation of the vector meson Cabibbo suppressed decay D+ → rho0 mu+ nu
G. Alimonti;G. Bellini;B. Caccianiga;M. Di Corato;M. Giammarchi;F. Leveraro;E. Meroni;G. Gianini;
1997
Abstract
We report on the first statistically significant observation of the vector meson Cabibbo suppressed semileptonic decay D+ → rho0 mu+ nu. We measure the branching ratio of the decay mode D+ → rho0 mu+ nu (plus possible unobserved gamma from D+ → eta′ mu + nu, eta′ → gamma rho0) with respect to the decay mode D+ -> antiK*0 mu+ nu to be BR(D+ -> rho0 mu+ nu)/BR(D+ -> antiK*0 mu+ nu) = 0.079 +/-0.019(stat) +/-0.013(sys). Data were collected by Fermilab photoproduction experiement E687
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