101. Measurement of B ->(Ds(*)+D*(*)) branching fractions
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Ahmed, S., Alam, Ms, Athar, Sb, Jian, L., Ling, L., Saleem, M., Timm, S., Wappler, F., Anastassov, A., Duboscq, Je, Eckhart, E., Gan, Kk, Gwon, C., Hart, T., Honscheid, K., Hufnagel, D., Kagan, H., Kass, R., Pedlar, Tk, Schwarthoff, H., Thayer, Jb, Toerne, E., Zoeller, Mm, Richichi, Sj, Severini, H., Skubic, P., Undrus, A., Chen, S., Fast, J., Hinson, Jw, Lee, J., Miller, Dh, Shibata, Ei, Shipsey, Ipj, Pavlunin, V., Cronin-Hennessy, D., Lyon, Al, Thorndike, Eh, Jessop, Cp, Marsiske, H., Perl, Ml, Savinov, V., Zhou, X., Coan, Te, Fadeyev, V., Maravin, Y., Narsky, I., Stroynowski, R., Ye, J., Wlodek, T., Artuso, M., Ayad, R., Boulahouache, C., Bukin, K., Dambasuren, E., Karamov, S., Majumder, G., Moneti, Gc, Mountain, R., Schuh, S., Skwarnicki, T., Stone, S., Viehhauser, G., Wang, Jc, Wolf, A., Wu, J., Kopp, S., Mahmood, Ah, Csorna, Se, Danko, I., Mclean, Kw, Marka, S., Xu, Z., Godang, R., Kinoshita, K., Lai, Ic, Schrenk, S., Bonvicini, G., Cinabro, D., Mcgee, S., Perera, Lp, Zhou, Gj, Lipeles, E., Pappas, Sp, Schmidtler, M., Shapiro, A., Sun, Wm, Weinstein, Aj, Wurthwein, F., Jaffe, DE, Masek, G., Paar, Hp, Potter, Em, Prell, S., Sharma, V., Asner, Dm, Eppich, A., Hill, Ts, Morrison, Rj, Nelson, Hn, Richman, Jd, Witherell, Ms, Roy A. Briere, Chen, Gp, Behrens, Bh, Ford, Wt, Gritsan, A., Roy, J., Smith, Jg, Alexander, Jp, Baker, R., Bebek, C., Berger, Be, Berkelman, K., Blanc, F., Boisvert, V., Cassel, Dg, Dickson, H., Drell, Ps, Ecklund, Km, Ehrlich, R., Foland, Ad, Gaidarev, P., Gibbons, L., Gittelman, B., Gray, Sw, Hartill, Dl, Heltsley, Bk, Hopman, Pi, Jones, Cd, Kreinick, Dl, Lohner, M., Magerkurth, A., Meyer, To, Mistry, Nb, Nordberg, E., Patterson, Jr, Peterson, D., Riley, D., Thayer, Jg, Urner, D., Valant-Spaight, B., Warburton, A., Avery, P., Prescott, C., Rubiera, Ai, Yelton, J., Zheng, J., Brandenburg, G., Ershov, A., Gao, Ys, Kim, Dyj, Wilson, R., Browder, Te, Li, Y., Rodriguez, Jl, Yamamoto, H., Bergfeld, T., Eisenstein, Bi, Ernst, J., Gladding, Ge, Gollin, Gd, Hans, Rm, Johnson, E., Karliner, I., Marsh, Ma, Palmer, M., Plager, C., Sedlack, C., Selen, M., Thaler, Jj, Williams, J., Edwards, Kw, Janicek, R., Patel, Pm, Sadoff, Aj, Ammar, R., Bean, A., Besson, D., Davis, R., Kwak, N., Zhao, X., Anderson, S., Frolov, Vv, Kubota, Y., Lee, Sj, Mahapatra, R., O Neill, Jj, Poling, R., Riehle, T., Smith, A., Stepaniak, Cj, Urheim, J., and Cleo, Collaboration
- Abstract
This article describes improved measurements by CLEO of the B0→Ds+D*- and B0→Ds*+D*- branching fractions, and first evidence for the decay B+→Ds(*)+D̄** 0, where D̄**0 represents the sum of the D̄1(2420)0, D̄2*(2460)0, and D̄1(j = 1/2)0 L = 1 charm meson states. Also reported is the first measurement of the Ds*+ polarization in the decay B0→Ds*+D*-. A partial reconstruction technique, employing only the fully reconstructed Ds+ and slow pion πs- from the D*-→D̄0πs- decay, enhances sensitivity. The observed branching fractions are B(B0→Ds+D*-) = (1.10±0.18±0.10±0.28)%, B(B0→Ds*+D*-) = (1.82±0.37±0.24 ±0.46)% , and B(B+→Ds(*) +D̄**0) = (2.73±0.78±0.48±0.68)%, where the first error is statistical, the second systematic, and the third is the uncertainty in the Ds+→φπ+ branching fraction. The measured Ds*+ longitudinal polarization, ΓL/Γ = (50.6±13.9±3.6)%, is consistent with the factorization prediction of 54%.