Measurement of vertical bar Vcb vertical bar using the semileptonic decay (B)d(0))over-bar � Dstar+l(-)(nu)over-barl

Abdallah, J. et al. (2004) Measurement of vertical bar Vcb vertical bar using the semileptonic decay (B)d(0))over-bar � Dstar+l(-)(nu)over-barl. European Physical Journal C, 33(2), pp. 213-232. (doi:10.1140/epjc/s2004-01598-6)

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Publisher's URL: http://dx.doi.org/10.1140/epjc/s2004-01598-6

Abstract

Data from Z decays in DELPHI have been searched for [(B- d(o))over bar] � D<sup>star</sup>+ l(-) (ν) over bar (l) with the D<sup>star</sup>+ decaying to D(0)pi(+) and D-0 � K(-)pi(+), K(-)pi(+)pi(+)pi(- ) or K- pi(+)(pi(0)). These events are used to measure the CKM matrix element \V-cb\ and the form factor slope, rho(A1)(2): F- D<sup>star</sup>(1) \V-cb\ = 0.0392 +/- 0.0018 +/- 0.0023; rho(A1)(2) = 1.32 +/- 0.15 +/- 0.33 corresponding to a branching fraction: BR([(B-d(0))over bar] � D(<sup>star</sup>+)l(-)(ν) over bar (l)) = (5.90 +/- 0.22 +/- 0.50)%. Combining these and previous DELPHI measurements gives: FD<sup>star</sup>(1)\V-cb\ = 0.0377 +/- 0.0011 +/- 0.0019, rho(A1)(2) = 1.39 +/- 0.10 +/- 0.33 and BR([(B- d(0))over bar] � D(<sup>star</sup>+)l(-)(ν) over bar (l)) = (5.39 +/- 0.11 +/- 0.34)% Using F-D<sup>star</sup>(1) = 0.91 +/- 0.04, yields: \V-cb\ = 0.0414 +/- 0.0012(stat.) +/- 0.0021(syst.) +/- 0.0018 (theory). The b-quark semileptonic branching fraction into a D<sup>star</sup>+ emitted from higher mass charmed excited states has also been measured to be: BR(b � D<sup>star</sup>+ Xl(-)(ν) over bar (l)) = (0.67 +/- 0.08 +/- 0.10)%.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Liko, Dr Dritan and Garcia-Mata, Dr Carlos and Battaglia, Dr Marina
Authors: Abdallah, J., Abreu, P., Adam, W., Adzic, P.,, Albrecht, T., Alderweireld, T., Alemany-Fernandez, R., Allmendinger, T., Allport, P., Amaldi, U., Amapane, N., Amato, S., Anashkin, E., Andreazza, A., Andringa, S., Anjos, N., Antilogus, P., Apel, W.D., Arnoud, Y., Ask, S.,, Asman, B., Augustin, E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barbier, R., Bardin, D., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K.H., Begalli, M.,, Behrmann, A., Ben Haim, E., Benekos, N., Benvenuti, A., Berat, C., Berggren, M., Berntzon, L.,, Bertrand, D., Besancon, M.,, Besson, N., Bloch, D., Blom, M., Bluj, M.,, Bonesini, M., Boonekamp, M., Booth, L., Borisov, G., Botner, O., Bouquet, B., Bowcock, V., Boyko, I., Bracko, M., Brenner, R., Brodet, E., Bruckman, P., Brunet, M., Bugge, L., Buschmann, P., Calvi, M., Camporesi, T., Canale, V., Carena, F.,, Castro, N., Cavallo, F., Chapkin, M., Charpentier, P., Checchia, P., Chierici, R., Chliapnikov, P., Chudoba, J., Chung, U., Cieslik, K., Collins, P., Contri, R., Cosme, G., Cossutti, F., Costa, J., Crennell, D., Cuevas, J., D'Hondt, J., Dalmau, J., da Silva, T.,, Da Silva, W., Della Ricca, G., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Maria, N., De Min, A., de Paula, L., Di Ciaccio, L., Di Simone, A., Doroba, K., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Santo, C.E., Fanourakis, G., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferro, F., Flagmeyer, U.,, Foeth, H., Fokitis, E., Fulda-Quenzer, F., Fuster, J., Gandelman, M., Garcia-Mata, C., Gavillet, P., Gazis, E., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Graziani, E., Grosdidier, G.,, Grzelak, K., Guy, J., Haag, C., Hallgren, A., Hamacher, K., Hamilton, K., Haug, S., Hauler, F., Hedberg, V., Hennecke, M., Herr, H., Hoffman, J., Holmgren, S.O., Holt, J., Houlden, A., Hultqvist, K.,, Jackson, N., Jarlskog, G., Jarry, P., Jeans, D., Johansson, K., Johansson, D., Jonsson, P., Joram, C., Jungermann, L., Kapusta, F., Katsanevas, S., Katsoufis, E., Kernel, G.,, Kersevan, P.,, Kerzel, U.,, Kiiskinen, A., King, T.,, Kjaer, J., Kluit, P., Kokkinias, P., Kourkoumelis, C., Kouznetsov, O., Krumstein, Z., Kucharczyk, M., Lamsa, J., Leder, G., Ledroit, F., Leinonen, L., Leitner, R., Lemonne, J., Lepeltier, V., Lesiak, T., Liebig, W., Liko, D., Lipniacka, A., Lopes, H., Lopez, M., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Malek, A., Maltezos, S., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Martinez-Rivero, C., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Mazzucato, F., Mazzucato, M., Mc Nulty, R., Meroni, C., Migliore, E., Mitaroff, W., Mjoernmark, U., Moa, T., Moch, M., Moenig, K., Monge, R., Montenegro, J., Moraes, D., Moreno, S., Morettini, P., Mueller, U., Muenich, K., Mulders, M., Mundim, L., Murray, W., Muryn, B., Myatt, G., Myklebust, T., Nassiakou, M., Navarria, F., Nawrocki, K., Nicolaidou, R., Nikolenko, M., Oblakowska-Mucha, A., Obraztsov, V., Olshevski, A., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Palacios, P., Palka, H., Papadopoulou, D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Peralta, L., Perepelitsa, V., Perrotta, A., Petrolini, A., Piedra, J., Pieri, L., Pierre, F., Pimenta, M., Piotto, E., and Podobnik, T.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal C
Publisher:Springer
ISSN:1434-6044
ISSN (Online):1434-6052

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