Cargando…

Measurement of the inclusive charmless and double-charm B branching ratios

The DELPHI experiment at LEP has measured the inclusive charmless $B$ hadron decay branching ratio, the $B$ branching ratio into two charmed particles, and the total number of charmed particles per $B$ decay, using the hadronic Z data taken between 1992 and 1995. The results are extracted from a fit...

Descripción completa

Detalles Bibliográficos
Autores principales: Abreu, P, Adam, W, Adye, T, Adzic, P, Alekseev, G D, Alemany, R, Allport, P P, Almehed, S, Amaldi, Ugo, Amato, S, Andersson, P, Andreazza, A, Antilogus, P, Apel, W D, Arnoud, Y, Åsman, B, Augustin, J E, Augustinus, A, Baillon, Paul, Bambade, P, Barão, F, Barbier, R, Bardin, Dimitri Yuri, Barker, G, Baroncelli, A, Bärring, O, Bates, M J, Battaglia, Marco, Baubillier, M, Becks, K H, Begalli, M, Beillière, P, Belokopytov, Yu A, Belous, K S, Benvenuti, Alberto C, Bérat, C, Berggren, M, Bertini, D, Bertrand, D, Besançon, M, Bianchi, F, Bigi, M, Bilenky, S M, Billoir, P, Bizouard, M A, Bloch, D, Bonesini, M, Bonivento, W, Boonekamp, M, Booth, P S L, Borgland, A W, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, T J V, Bozovic, I, Bozzo, M, Branchini, P, Brand, K D, Brenke, T, Brenner, R A, Brown, R, Brückman, P, Brunet, J M, Bugge, L, Buran, T, Burgsmüller, T, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camacho-Rozas, A J, Camporesi, T, Canale, V, Canepa, M, Carena, F, Carroll, L, Caso, Carlo, Castillo-Gimenez, M V, Cattai, A, Cavallo, F R, Cerruti, C, Chabaud, V, Chapkin, M M, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, G A, Chen, M, Chierici, R, Chliapnikov, P V, Chochula, P, Chorowicz, V, Chudoba, J, Collins, P, Colomer, M, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Cowell, J H, Crawley, H B, Crennell, D J, Crosetti, G, Cuevas-Maestro, J, Czellar, S, D'Almagne, B, Damgaard, G, Dauncey, P D, Davenport, Martyn, Da Silva, W, Deghorain, A, Della Ricca, G, Delpierre, P A, Demaria, N, De Angelis, A, de Boer, Wim, De Brabandere, S, De Clercq, C, La Vaissière, C de, De Lotto, B, De Min, A, De Paula, L S, Dijkstra, H, Di Ciaccio, Lucia, Di Diodato, A, Djannati, A, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Drees, K A, Dris, M, Duperrin, A, Durand, J D, Edsall, D M, Ehret, R, Eigen, G, Ekelöf, T J C, Ekspong, Gösta, Ellert, M, Elsing, M, Engel, J P, Erzen, B, Espirito-Santo, M C, Falk, E, Fanourakis, G K, Fassouliotis, D, Fayot, J, Feindt, Michael, Fenyuk, A, Ferrari, P, Ferrer, A, Fichet, S, Firestone, A, Fischer, P A, Flagmeyer, U, Föth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B J, Frodesen, A G, Frühwirth, R, Fulda-Quenzer, F, Fuster, J A, Galloni, A, Gamba, D, Gandelman, M, García, C, García, J, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, E N, Gelé, D, Gerber, J P, Gerdyukov, L N, Ghodbane, N, Glege, F, Gokieli, R, Golob, B, González-Caballero, I, Gopal, Gian P, Gorn, L, Górski, M, Gracco, Valerio, Grahl, J, Graziani, E, Green, C, Grefrath, A, Gris, P, Grosdidier, G, Grzelak, K, Günther, M, Guy, J, Hahn, F, Hahn, S, Haider, S, Hajduk, Z, Hallgren, A, Hamacher, K, Harris, F J, Hedberg, V, Heising, S, Henriques, R P, Hernández, J J, Herquet, P, Herr, H, Hessing, T L, Heuser, J M, Higón, E, Holmgren, S O, Holt, P J, Holthuizen, D J, Hoorelbeke, S, Houlden, M A, Hrubec, Josef, Huet, K, Hultqvist, K, Jackson, J N, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E K, Jönsson, L B, Jönsson, P E, Joram, C, Juillot, P, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, E C, Keränen, R, Khokhlov, Yu A, Khomenko, B A, Khovanskii, N N, King, B J, Kjaer, N J, Klapp, O, Klein, H, Kluit, P M, Knoblauch, D, Kokkinias, P, Koratzinos, M, Korcyl, K, Kostyukhin, V, Kourkoumelis, C, Kuznetsov, O, Krammer, Manfred, Kreuter, C, Kronkvist, I J, Krumshtein, Z, Kubinec, P, Kucewicz, W, Kurvinen, K L, Lacasta, C, Lamsa, J, Lanceri, L, Lane, D W, Langefeld, P, Laugier, J P, Lauhakangas, R, Leder, Gerhard, Ledroit, F, Lefébure, V, Legan, C K, Leisos, A, Leitner, R, Lemonne, J, Lenzen, Georg, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liko, D, Lipniacka, A, Lippi, I, Lörstad, B, Loken, J G, Lopes, J H, López, J M, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J N, Mahon, J R, Maio, A, Malek, A, Malmgren, T G M, Malychev, V, Mandl, F, Marco, J, Marco, R P, Maréchal, B, Margoni, M, Marin, J C, Mariotti, C, Markou, A, Martínez-Rivero, C, Martínez-Vidal, F, Martí i García, S, Matorras, F, Matteuzzi, C, Matthiae, Giorgio, Mazzucato, F, Mazzucato, M, McCubbin, M L, McKay, R, McNulty, R, McPherson, G, Medbo, J, Meroni, C, Meyer, W T, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Winfried A, Mjörnmark, U, Moa, T, Møller, R, Mönig, K, Monge, M R, Moreau, X, Morettini, P, Münich, K, Mulders, M, Mundim, L M, Murray, W J, Muryn, B, Myatt, Gerald, Myklebust, T, Naraghi, F, Navarria, Francesco Luigi, Navas, S, Nawrocki, K, Negri, P, Némécek, S, Neufeld, N, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B S, Nieuwenhuizen, M, Nikolaenko, V, Nikolenko, M, Niss, P, Nomerotski, A, Normand, Ainsley, Nygren, A, Oberschulte-Beckmann, W, Obraztsov, V F, Olshevskii, A G, Onofre, A, Orava, Risto, Orazi, G, Österberg, K, Ouraou, A, Paganini, P, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palka, H, Papadopoulou, T D, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, Manfred, Perrotta, A, Petridou, C, Petrolini, A, Phillips, H T, Piana, G, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Podobrin, O, Pol, M E, Polok, G, Poropat, P, Pozdnyakov, V, Privitera, P, Pukhaeva, N, Pullia, Antonio, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P N, Read, A L, Rebecchi, P, Redaelli, N G, Regler, Meinhard, Reid, D, Reinhardt, R, Renton, P B, Resvanis, L K, Richard, F, Rídky, J, Rinaudo, G, Røhne, O M, Romero, A, Ronchese, P, Rosenberg, E I, Rosinsky, P, Roudeau, Patrick, Rovelli, T, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Yu, Sadovskii, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schneider, H, Schwickerath, U, Schyns, M A E, Scuri, F, Seager, P, Sedykh, Yu, Segar, A M, Sekulin, R L, Shellard, R C, Sheridan, A, Silvestre, R, Simonetto, F, Sissakian, A N, Skaali, T B, Smadja, G, Smirnov, N, Smirnova, O G, Smith, G R, Solovyanov, O, Sopczak, André, Sosnowski, R, Souza-Santos, D, Spassoff, Tz, Spiriti, E, Sponholz, P, Squarcia, S, Stampfer, D, Stanescu, C, Stanic, S, Stapnes, Steinar, Stavitski, I, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli de Fatis, T, Chikilev, O G, Tegenfeldt, F, Terranova, F, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, L G, Todorov, T, Todorova, S, Toet, D Z, Tomaradze, A G, Tomé, B, Tonazzo, A, Tortora, L, Tranströmer, G, Treille, D, Tristram, G, Trombini, A, Troncon, C, Tsirou, A L, Turluer, M L, Tyapkin, I A, Tyndel, M, Tzamarias, S, Überschär, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, van Apeldoorn, G W, van Dam, P, Van Eldik, J, Van Lysebetten, A, Van Vulpen, I B, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W A, Verbeure, F, Verlato, M, Vertogradov, L S, Verzi, V, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A S, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weiser, C, Wetherell, Alan M, Wicke, D, Wickens, J H, Wilkinson, G R, Williams, W S C, Winter, M, Witek, M, Wlodek, T, Wolf, G, Yi, J, Yushchenko, O P, Zaitsev, A, Zalewska-Bak, A, Zalewski, Piotr, Zavrtanik, D, Zevgolatakos, E, Zimin, N I, Zucchelli, G C, Zumerle, G
Lenguaje:eng
Publicado: 1998
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(98)00147-6
http://cds.cern.ch/record/344400
Descripción
Sumario:The DELPHI experiment at LEP has measured the inclusive charmless $B$ hadron decay branching ratio, the $B$ branching ratio into two charmed particles, and the total number of charmed particles per $B$ decay, using the hadronic Z data taken between 1992 and 1995. The results are extracted from a fit to the $b$-tagging probability distribution based on the precise impact parameter measurements made using the microvertex detector. The inclusive charmless $B$ branching ratio, including $B$ decays into hidden charm ($c\bar{c}$), is measured to be $0.033 \pm 0.021$. The $B$ branching ratio into two open charmed particles is $0.136 \pm 0.042$. The mean number of charmed particles per $B$ decay (including hidden charm) is $1.147 \pm 0.041$. After subtracting the $B$ decay branching ratio into hidden charm, the charmless $B$ branching ratio is found to be $0.007 \pm 0.021$, compatible with the Standard Model expectation. Models that predict an additional contribution to the charmless $B$ branching ratio of 0.037 or higher are excluded with at least 95\% confidence.