1. Determination of ${\rm |V_{ub}|}$ from the measurement of the inclusive charmless semileptonic branching ratio of b hadrons
- Author
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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, Batignani, G, Becker, U, Benchouk, C, Bencivenni, G, Berlich, R, Bettarini, S, Betteridge, A P, Beuselinck, R, Binnie, David M, Black, S N, Blair, G A, Bloch-Devaux, B, Blondel, A, Blum, Walter, Boccali, T, Boix, G, Bologna, G, Bonissent, A, Bonneaud, G R, Booth, C N, Bossi, F, Botterill, David R, Boucrot, J, Bourdon, P, Bowdery, C K, Bozzi, C, Brandt, S, Brient, J C, Bright-Thomas, P G, Bryant, L M, Buchmüller, O L, Buck, P G, Bujosa, G, Buskulic, Damir, Böhrer, A, Büscher, V, Calderini, G, Callot, O, Cameron, W, Campana, P, Capon, G, Carpinelli, M, Carr, J, Cartwright, S L, Casado, M P, Casper, David William, Cattaneo, M, Cerutti, F, Chambers, J T, Charles, E, Chazelle, G, Chen, S, Chiarella, V, Chmeissani, M, Ciocci, M A, Ciulli, V, Clifft, R W, Colaleo, A, Colas, P, Colrain, P, Combley, F, Corden, M, Cordier, A, Cowan, G D, Coyle, P, Crawford, G, Creanza, D, Crespo, J M, Curtis, L, Dann, J H, Daskalakis, G, Davier, M, De Palma, M, Delfino, M C, Dell'Orso, R, Deschamps, O, Dhamotharan, S, Dietl, H, Dissertori, G, Dornan, Peter J, Drevermann, H, Duflot, L, Décamp, D, Edgecock, T R, Elmer, P, Emery, S, Etienne, F, Falvard, A, Fantechi, R, Felici, G, Ferdi, C, Ferguson, D P S, Fernández, E, Fernández-Bosman, M, Ferrante, I, Finch, A J, Focardi, E, Forti, F, Forty, Roger W, Foster, F, Foà, L, Frank, M, Ganis, G, Gao, Y, Garrido, L, Gay, P, Gelao, G, Georgiopoulos, C H, Geweniger, C, Ghete, V M, Ghez, P, Giannini, G, Giassi, A, Giehl, I, Giorgi, M A, Girone, M, Girtler, P, Gobbo, B, González, S, Goodsir, S M, Goy, C, Graefe, G, Graugès-Pous, E, Green, M G, Greening, T C, Gregorio, A, Grivaz, J F, Grupen, Claus, Guicheney, C, Hagelberg, R, Halley, A W, Hanke, P, Hansen, J B, Hansen, J D, Hansen, J R, Hansen, P H, Hansper, G, Harvey, J, Hayes, O J, Haywood, S, Henrard, P, Hepp, V, Heusse, P, Hoffmann, C, Hu, H, Huang, X, Hughes, G, Höcker, A, Iaselli, Giuseppe, Jacholkowska, A, Jaffe, D E, Jakobs, K, Janot, P, Jin, S, Johnson, R P, Jones, R W L, Jost, B, Jousset, J, Juste, A, Kelly, M S, Kim, D W, Kim, H Y, Kleinknecht, K, Kluge, E E, Kneringer, E, Konstantinidis, N P, Kozanecki, Witold, Kroha, H, Kuhn, D, Kyriakis, A, Lançon, E, Laurelli, P, Le Diberder, F R, Lees, J P, Lefrançois, J, Lehraus, Ivan, Lehto, M H, Lemaire, M C, Leroy, O, Ligabue, F, Lin, J, Litke, A M, Locci, E, Lucotte, A, Lusiani, A, Lutz, A M, Lynch, J G, Lütjens, G, Maggi, G, Maggi, M, 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, Moneta, L, Monteil, S, Montret, J C, Moser, H G, Motsch, F, Moutoussi, A, Murtas, F, Murtas, G P, Musolino, G, Männer, W, Nachtman, J M, Nash, J, Negus, P, Nief, J Y, Nielsen, J, Nilsson, B S, Norton, P R, Nuzzo, S, O'Shea, V, Orejudos, W, Ouyang, Q, Pacheco, A, Palla, Fabrizio, Pallin, D, Pan, Y B, Park, I C, Parrini, G, Pascual, A, Passalacqua, L, Payre, P, Pepé-Altarelli, M, Perret, P, Perrodo, P, Pietrzyk, B, Podlyski, F, Proriol, J, Putzer, A, Pérez, P, 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, Rosnet, P, Rothberg, J E, Rougé, A, Roussarie, A, Rousseau, D, Rudolph, G, Ruggieri, F, Rumpf, M, Saadi, Y, Sadouki, A, Sander, H G, Sanguinetti, G, Saraiva, P, Scarr, J M, Schael, S, Schlatter, W D, Schmitt, M, Schneider, O, Schuller, J P, Schune, M H, Schwindling, J, Sciabà, A, Scott, I J, Sedgbeer, J K, Selvaggi, G, Settles, Ronald, Seywerd, H C J, Sguazzoni, G, Silvestris, L, Simopoulou, Errietta, Siotis, I, Smith, K, Smolik, L, Sommer, J, Spagnolo, P, Stenzel, H, Stephan, F, Strong, J A, Sánchez, F, Talby, 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, Thulasidas, M, Tittel, K, Tomalin, I R, Tonelli, G, Tournefier, E, Trabelsi, A, Trabelsi, K, Tricomi, A, Vallage, B, Van Gemmeren, P, Vannini, C, Vayaki, Anna, Veillet, J J, Venturi, A, Verderi, M, Verdini, P G, Videau, H L, Videau, I, Von Wimmersperg-Töller, J H, Wachsmuth, H W, Walsh, J, Wang, T, Wasserbaech, S R, Werner, S, Wiedenmann, W, Williams, M D, Williams, M I, 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, Zito, G, Zobernig, G, Barate, R, Buskulic, D, Decamp, D, Ghez, P, Goy, C, Lees, J, Lucotte, A, Merle, E, Minard, M, Nief, J, Pietrzyk, B, Alemany, R, Boix, G, Casado, M, Chmeissani, M, Crespo, J, Delfino, M, Fernandez, E, Fernandez Bosman, M, Garrido, L, Grauges, E, Juste, A, Martinez, M, Merino, G, Miquel, R, Mir, L, Park, I, Pascual, A, Riu, I, Sanchez, F, Colaleo, A, Creanza, D, de Palma, M, Gelao, G, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Becker, U, Bright Thomas, P, Casper, D, Cattaneo, M, Ciulli, V, Dissertori, G, Drevermann, H, Forty, R, Frank, M, Hagelberg, R, Hansen, J, Harvey, J, Janot, P, Jost, B, Lehraus, I, Mato, P, Minten, A, Moneta, L, Pacheco, A, Ranjard, F, Rolandi, L, Rousseau, D, Schlatter, D, Schmitt, M, Schneider, O, Tejessy, W, Teubert, F, Tomalin, I, Wachsmuth, H, Ajaltouni, Z, Badaud, F, Chazelle, G, Deschamps, O, Falvard, A, Ferdi, C, Gay, F, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, J, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rosnet, P, Hansen, P, Nilsson, B, Rensch, B, Waananen, A, Daskalakis, G, Kyriakis, A, Markou, C, Simopoulou, E, Siotis, I, Vayaki, A, Blondel, A, Bonneaud, G, Brient, J, Bourdon, P, Rouge, A, Rumpf, M, Valassi, A, Verderi, M, Videau, H, Focardi, E, Parrini, G, Zachariadou, K, Corden, M, Georgiopoulos, C, Jaffe, D, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Cerutti, F, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G, Passalacqua, L, Pepe Altarelli, M, Curtis, L, Halley, A, Lynch, J, Negus, P, O'Shea, V, Raine, C, Scarr, J, Smith, K, Teixeira Dias, P, Thompson, A, Thomson, E, Buchmuller, O, Dhamotharan, S, Geweniger, C, Graefe, G, Hanke, P, Hansper, G, Hepp, V, Kluge, E, Putzer, A, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, D, Cameron, M, Dornan, P, Girone, M, Goodsir, S, Martin, E, Marinelli, N, Moutoussi, A, Nash, J, Sedgbeer, J, Spagnolo, P, Williams, M, Ghete, V, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bowdery, C, Buck, P, Colrain, P, Crawford, G, Finch, A, Foster, F, Hughes, G, Jones, R, Robertson, N, Giehl, I, Hoffmann, C, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, H, van Gemmeren, P, Zeitnitz, C, Aubert, J, Benchouk, C, Bonissent, A, Bujosa, G, Carr, J, Coyle, P, Etienne, F, Leroy, O, Motsch, F, Payre, P, Talby, M, Sadouki, A, Thulasidas, M, Trabelsi, K, Aleppo, M, Antonelli, M, Ragusa, F, Berlich, R, Blum, W, Buscher, V, Dietl, H, Ganis, G, Kroha, H, Lutjens, G, Mannert, C, Manner, W, Moser, H, Schael, S, Settles, R, Seywerd, H, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Chen, S, Cordier, A, Davier, M, Duflot, L, Grivaz, J, Heusse, P, Hocker, A, Jacholkowska, A, Kim, D, Le Diberder, F, Lefrancois, J, Lutz, A, Schune, M, Tournefier, E, Veillet, J, Videau, I, Zerwas, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Boccali, T, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, M, Dell'Orso, R, Fantechi, R, Ferrante, I, Foa, L, Forti, F, Giassi, A, Giorgi, M, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, P, Messineo, A, Palla, F, Rizzo, G, Sanguinetti, G, Sciaba, A, Sguazzoni, G, Tenchini, R, Tonelli, G, Vannini, C, Venturi, A, Verdini, P, Blair, G, Bryant, L, Chambers, J, Green, M, Medcalf, T, Perrodo, P, Strong, J, von Wimmersperg Toeller, J, Botterill, D, Clifft, R, Edgecock, T, Haywood, S, Norton, P, Thompson, J, Wright, A, Bloch Devaux, B, Colas, P, Emery, S, Kozanecki, W, Lancon, E, Lemaire, M, Locci, E, Perez, P, Rander, J, Renardy, J, Roussarie, A, Schuller, J, Schwindling, J, Trabelsi, A, Vallage, B, Black, S, Dann, J, Johnson, R, Kim, H, Konstantinidis, N, Litke, A, Mcneil, M, Taylor, G, Booth, C, Cartwright, S, Combley, F, Kelly, M, Lehto, M, Thompson, L, Affholderbach, K, Bohrer, A, Brandt, S, Cowan, G, Grupen, C, Saraiva, P, Smolik, L, Stephan, F, Giannini, G, Gobbo, B, Musolino, G, Rothberg, J, Wasserbaech, S, Armstrong, S, Betteridge, A, Charles, E, Elmer, P, Ferguson, D, Gao, Y, Gonzalez, S, Greening, T, Hayes, O, Hu, H, Jin, S, Mcnamara, P, Nachtman, J, Nielsen, J, Orejudos, W, Pan, Y, Saadi, Y, Scott, I, Walsh, J, Wu, S, Wu, X, and Zobernig, G
- Subjects
Physics ,Particle physics ,Physics and Astronomy (miscellaneous) ,Branching fraction ,Cabibbo–Kobayashi–Maskawa matrix ,Electron–positron annihilation ,High Energy Physics::Phenomenology ,Hadron ,Nuclear physics ,High Energy Physics::Experiment ,Matrix element ,Production (computer science) ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Production rate - Abstract
From a study of the kinematic properties of the final state produced in the semileptonic decays ${\rm b\to X\ell\nu_{\ell}}$ , the inclusive charmless semileptonic branching ratio of b hadrons is measured. With a sample of 3.6 million hadronic Z decays recorded between 1992 and 1995 with the ALEPH detector at LEP, the value ${\rm Br(b\to X_u\ell\nu_{\ell})}$ is determined to be $(1.73\pm 0.55_{{\rm stat}}\pm 0.55_{{\rm syst}})\times 10^{-3}$ , where ${\rm X_u}$ represents any charmless hadronic state and b is a mixture of b hadrons weighted by their production rates. This measurement yields the result \[ {\rm |V_{ub}|^2}= (18.68\pm 5.94_{{\rm stat}}\pm 5.94_{{\rm syst}}\pm 1.45_{HQE})\times 10^{-6}, \] where the last error comes from the conversion of the branching ratio to the CKM matrix element squared.
- Published
- 1999