Cargando…

A direct measurement of $|V_{cs}|$ in hadronic W decays using a charm tag

The inclusive charm production rate in W decays is measured from a study of the properties of final state particles. The sample of W pairs is selected from 67.7 pb-1 collected by ALEPH in 1996 and 1997 at centre-of-mass energies near 172 and 183 GeV in the channels W+W- -->4q and W+W- -->lvqq....

Descripción completa

Detalles Bibliográficos
Autores principales: Barate, R, Abbaneo, D, Affholderbach, K, Ajaltouni, Ziad J, Alemany, R, Aleppo, M, Antonelli, A, Antonelli, M, Armstrong, S R, Aubert, Jean-Jacques, Azzurri, P, Badaud, F, Bagliesi, G, Becker, U, Bencivenni, G, Beuselinck, R, Binnie, David M, Black, S N, Blair, G A, Bloch-Devaux, B, Blondel, A, Boccali, T, Boix, G, Bologna, G, Bonissent, A, Booth, C N, Bossi, F, Botterill, David R, Boucrot, J, Bowdery, C K, Bozzi, C, Brandt, S, Bravo, S, Brient, J C, Buchmüller, O L, Buck, P G, Böhrer, A, Büscher, V, Calderini, G, Callot, O, Cameron, W, Campana, P, Capon, G, Carr, J, Cartwright, S L, Casado, M P, Cattaneo, M, Cavanaugh, R J, Cerutti, F, Chalmers, M, Chazelle, G, Chen, S, Chiarella, V, Chmeissani, M, Ciulli, V, Clifft, R W, Colaleo, A, Colas, P, Coles, J, Combley, F, Corden, M, Cowan, G D, Coyle, P, Creanza, D, Crespo, J M, Curtis, L, Dann, J H, Daskalakis, G, Davier, M, De Palma, M, De Vivie de Régie, J B, Dell'Orso, R, Deschamps, O, Dessagne, S, Dhamotharan, S, Dietl, H, Dissertori, G, Dornan, Peter J, Drevermann, H, Duflot, L, Décamp, D, Ealet, A, Edgecock, T R, Ellis, G, Elmer, P, Fabbro, B, Falvard, A, Faïf, G, Ferdi, C, Ferguson, D P S, Fernández, E, Fernández-Bosman, M, Ferrante, I, Finch, A J, Focardi, E, Forty, Roger W, Foster, F, Fouchez, D, Frank, M, Ganis, G, Gao, Y, Garrido, L, Gay, P, Georgiopoulos, C H, Geweniger, C, Ghete, V M, Ghez, P, Giannini, G, Gianotti, F, Giassi, A, Giehl, I, Gilardoni, S S, Girone, M, Girtler, P, Gobbo, B, González, S, Goodsir, S M, Goy, C, Graugès-Pous, E, Green, M G, Greening, T C, Gregorio, A, Grivaz, J F, Grupen, Claus, Guicheney, C, Halley, A W, Hanke, P, Hansen, J B, Hansen, J D, Hansen, J R, Hansen, P H, Harvey, J, Hayes, O J, Henrard, P, Hepp, V, Hess, J, Heusse, P, Hodgson, P N, Hu, H, Huang, X, Hughes, G, Hutchcroft, D E, Hölldorfer, F, Hüttmann, K, Iaselli, Giuseppe, Jacholkowska, A, Jakobs, K, Janot, P, Jin, S, Jones, L T, Jones, R W L, Jost, B, Jousset, J, Juste, A, Jézéquel, S, Kado, M, Kile, J, Kim, H Y, Kleinknecht, K, Kluge, E E, Kneringer, E, Konstantinidis, N P, Kröcker, M, Kuhn, D, Kyriakis, A, Lançon, E, Laurelli, P, Lees, J P, Lefrançois, J, Lehraus, Ivan, Lehto, M H, Lemaire, M C, Leroy, O, Ligabue, F, Lin, J, Litke, A M, Locci, E, Loomis, C, Lynch, J G, Lütjens, G, Machefert, F P, Maggi, G, Maggi, M, Maley, P, Mannert, C, Mannocchi, G, Marinelli, N, Markou, C, Marrocchesi, P S, Martin, E B, Martin, F, Martínez, M, Mato, P, McNamara, P A, McNeil, M A, Medcalf, T, Merino, G, Merle, E, Messineo, A, Michel, B, Minard, M N, Minten, Adolf G, Miquel, R, Mir, L M, Misiejuk, A, Monteil, S, Montret, J C, Morawitz, P, Moser, H G, Moutoussi, A, Murtas, F, Murtas, G P, Männer, W, Müller, A S, Nash, J, Negus, P, Nielsen, J, Nilsson, B S, Norton, P R, Nowell, J, Nuzzo, S, Nürnberger, H A, O'Shea, V, Orejudos, W, Ouyang, Q, Pacheco, A, Palla, Fabrizio, Pallin, D, Pan, Y B, Parrini, G, Passalacqua, L, Pepé-Altarelli, M, Perret, P, Pietrzyk, B, Podlyski, F, Prange, G, Przysiezniak, H, Putzer, A, Pérez, P, Pütz, J, Quast, G, Ragusa, F, Raine, C, Rander, J, Ranieri, A, Ranjard, F, Raso, G, Renardy, J F, Renk, B, Rensch, B, Riu, I, Rizzo, G, Robertson, N A, Rohne, E, Rolandi, Luigi, Rosowsky, A, Rothberg, J E, Rougé, A, Rudolph, G, Ruggieri, F, Ruiz, H, Räven, B, Saadi, Y, Saeger, P, Sander, H G, Sanguinetti, G, Schael, S, Schlatter, W D, Schmeling, S, Schmitt, M, Schneider, O, Sciabà, A, Scott, I J, Sedgbeer, J K, Selvaggi, G, Serin, L, Settles, Ronald, Seywerd, H C J, Sguazzoni, G, Sieler, U, Silvestris, L, Simopoulou, Errietta, Smith, D, Smizanska, M, Spagnolo, P, Stenzel, H, Strong, J A, Swynghedauw, M, Tanaka, R, Taylor, G, Teixeira-Dias, P, Tejessy, W, Tempesta, P, Tenchini, Roberto, Teubert, F, Thompson, A S, Thompson, J C, Thompson, L F, Thomson, E, Tilquin, A, Tittel, K, Tomalin, I R, Tournefier, E, Trabelsi, A, Tricomi, A, Tuchming, B, Valassi, Andrea, Vallage, B, Vayaki, Anna, Veillet, J J, Venturi, A, Verdini, P G, Videau, H L, Videau, I, Von Wimmersperg-Töller, J H, Wachsmuth, H W, Walsh, J, Wang, T, Ward, J J, Wasserbaech, S R, Werner, S, Wiedenmann, W, Williams, M D, Williams, M I, Williams, R W, Wolf, G, Wright, A E, Wu Sau Lan, Wu, X, Wunsch, M, Wäänänen, A, Xie, Y, Xu, R, Xue, S, Zachariadou, K, Zeitnitz, C, Zerwas, D, Zhang, J, Zhang, L, Zhao, W, Ziegler, T, Zito, G, Zobernig, G
Lenguaje:eng
Publicado: 1999
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)01088-6
http://cds.cern.ch/record/401152
Descripción
Sumario:The inclusive charm production rate in W decays is measured from a study of the properties of final state particles. The sample of W pairs is selected from 67.7 pb-1 collected by ALEPH in 1996 and 1997 at centre-of-mass energies near 172 and 183 GeV in the channels W+W- -->4q and W+W- -->lvqq. The branching fraction of hadronic W decays to a final state containing a c quark, R^W_c=Gamma(W-->cX)/Gamma(W-->hadrons), is measured to be 0.51 +- 0.05_stat +- 0.03_syst. This allows a direct determination of the CKM matrix element |V_cs| = 1.00 +- 0.11_stat +- 0.07_syst.