A study of B0 → D*+- v and B0 and B0 mixing using partial D*+ reconstruction.

Albrecht, H. et al. (1994) A study of B0 → D*+- v and B0 and B0 mixing using partial D*+ reconstruction. Physics Letters B, 324(2), pp. 249-254. (doi:10.1016/0370-2693(94)90415-4)

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Publisher's URL: http://dx.doi.org/10.1016/0370-2693(94)90415-4


Using the ARGUS detector at the e<sup>+</sup>e<sup>−</sup> storage ring DORIS II at DESY, we have studied the decay <span style="text-decoration: overline">B</span><sup>0</sup> → D*<sup>+</sup> ℓ<sup>-</sup> <span style="text-decoration: overline">v</span> by exploiting a partial D∗<sup>+</sup> reconstruction technique. The branching ratio for this mode was thereby determined to be (4.5 ± 0.3 ± 0.4)%. Using the corresponding sample of tagged B<sup>0</sup>mesons, we measured the B<sup>0</sup> and <span style="text-decoration: overline">B</span><sup>0</sup> mixing parameter to be r<sub>d</sub> = 0.194 ± 0.062 ± 0.054, a result only weakly dependent upon the ratio of semileptonic widths for and production rates of B<sup>0</sup> and B<sup>+</sup> mesons. We have also determined the branching ratio Br (<span style="text-decoration: overline">B</span><sup>0</sup> → X ℓ<sup>-</sup> <span style="text-decoration: overline">v</span> to be (9.3 ± 1.1 ± 1.5)%. By comparing the results for full and partial D∗<sup>+</sup> reconstuction we found the absolute branching ratios for D<sup>0</sup> → K<sup>−</sup>π<sup>+</sup> and D<sup>0</sup> →K<sup>−</sup>π<sup>+</sup>π<sup>+</sup>π<sup>−</sup> to be (4.5 ± 0.6 ± 0.4)% and (7.9 ± 1.5 ± 0.9)%, respectively.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Britton, Professor David
Authors: Albrecht, H., Ehrlichmann, H., Hamacher, T., Hofmann, R.P., Kirchhoff, T., Nau, A., Nowak, S., Schröder, H., Schulz, H.D., Walter, M., Wurth, R., Hast, C., Kapitza, H., Kolanoski, H., Kosche, A., Lange, A., Lindner, A., Mankel, R., Schieber, M., Siegmund, T., Spaan, B., Thurn, H., Töpfer, D., Wegener, D., Eckstein, P., Waldi, R., Paulini, M., Reim, K., Wegener, H., Eckmann, R., Mundt, R., Oest, T., Reiner, R., Schmidt-Parzefall, W., Stiewe, J., Werner, S., Ehret, K., Hofmann, W., Hüpper, A., Khan, S., Knöpfle, K.T., Seeger, M., Spengler, J., Britton, D.I., Charlesworth, C.E.K., Edwards, K.W., Hyatt, E.R.F., Krieger, P., MacFarlane, D.B., Patel, P.M., Prentice, J.D., Saull, P.R.B., Tzamariudaki, K., Van de Water, R.G., Yoon, T.-S., Reßing, D., Schmidtler, M., Schnieder, M., Schubert, K.R., Weseler, S., Kernel, G., Križan, P., Križnič, E., Podobnik, T., Živko, T., Balagura, V., Belyaev, I., Chechelnitsky, S., Danilov, M., Droutskoy, A., Gershtein, Y., Golutvin, A., Korolko, I., Kostina, G., Litvintsev, D., Lubimov, V., Pakhlov, P., Semenov, S., Snizhko, A., Tichomirov, I., and Zaitsev, Y.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physics Letters B
Published Online:16 October 2002

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