A measurement of Rb using mutually exclusive tags

Barate, R; Buskulic, D; Decamp, D; Ghez, P; Goy, C; Lees, J; Lucotte, A; Minard, M; Nief, J; Pietrzyk, B; Casado, M; Chmeissani, M; Comas, P; Crespo, J; Delfino, M; Fernandez, E; Fernandezbosman, M; Garrido, L; Juste, A; Martinez, M; Miquel, R; Mir, L; Orteu, S; Padilla, C; Park, I; Pascual, A; Perlas, J; Riu, I; Sanchez, F; Teubert, F; Colaleo, A; Creanza, D; Depalma, M; Gelao, G; Iaselli, G; Maggi, G; Maggi, M; Marinelli, N; 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; Alemany, R; Becker, U; Bazarko, A; Brightthomas, P; Cattaneo, M; Cerutti, F; Drevermann, H; Forty, R; Frank, M; Hagelberg, R; Harvey, J; Janot, P; Jost, B; Kneringer, E; Knobloch, J; Lehraus, I; Lutters, G; Mato, P; Minten, A; Moneta, L; Pacheco, A; Pusztaszeri, J; Ranjard, F; Rensing, P; Rizzo, P; Rizzo, G; Rolandi, L; Schlatter, D; Schmitt, M; Schneider, O; Tejessy, W; Tomalin, I; Wachsmuth, H; Wagner, A; Ajaltouni, Z; Barres, A; Boyer, C; Falvard, A; Ferdi, C; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, J; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Rossignol, J; Fearnley, T; Hansen, J; Hansen, J; Hansen, J; 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; Candlin, D; Parsons, M; Focardi, E; Parrini, G; Zachariadou, K; Corden, M; Georgiopoulos, C; Jaffe, D; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Casper, D; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, G; Passalacqua, L; Pepealtarelli, M; Curtis, L; Dorris, S; Halley, A; Knowles, I; Lynch, J; Oshea, V; Raine, C; Scarr, J; Smith, K; Teixeiradias, P; Thompson, A; Thomson, E; Thomson, F; Turnbull, R; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Kluge, E; Putzer, A; Schmidt, M; Sommer, J; Tittel, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, D; Cameron, W; Dornan, P; Girone, M; Goodsir, S; Martin, E; Moutoussi, A; Nash, J; Sedgbeer, J; Stacey, A; Williams, M; Dissertori, G; Ghete, V; Girtler, P; Kuhn, D; Rudolph, G; Betteridge, A; Bowdery, C; Colrain, P; Crawford, G; Finch, A; Foster, F; Hughes, G; Sloan, T; Williams, M; Galla, A; Giehl, I; Greene, A; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, H; Vangemmeren, P; Zeitnitz, C; Aubert, J; Benchouk, C; Bonissent, A; Bujosa, G; Calvet, D; Carr, J; Coyle, P; Diaconu, C; Etienne, F; Konstantinidis, N; Leroy, O; Motsch, F; Payre, P; Rousseau, D; Talby, M; Sadouki, A; Thulasidas, M; Trabelsi, K; Aleppo, M; Ragusa, F; Berlich, R; Blum, W; Brown, D; Buscher, V; Dietl, H; Dydak, F; Ganis, G; Gotzhein, C; Kroha, H; Lutjens, G; Lutz, G; Manner, W; Moser, H; Richter, R; Rosadoschlosser, A; Schael, S; Settles, R; Seywerd, H; Stdenis, R; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Chen, S; Choi, Y; Cordier, A; Davier, M; Duflot, L; Grivaz, J; Heusse, P; Hocker, A; Jacholkowska, A; Jacquet, M; Kim, D; Lediberder, F; Lefrancois, J; Lutz, A; Nikolic, I; Schune, M; Simion, S; Tournefier, E; Veillet, J; Videau, I; Zerwas, D; Azzurri, P; Bagliesi, G; Batignani, G; Bettarini, S; Bozzi, C; Calderini, G; Carpinelli, M; Ciocci, M; Ciulli, V; Dellorso, 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; Sanguinetti, G; Sciaba, A; Spagnolo, P; Steinberger, J; Tenchini, R; Tonelli, G; Vannini, C; Venturi, A; Verdini, P; Blair, G; Bryant, L; Chambers, J; Gao, Y; Green, M; Medcalf, T; Perrodo, P; Strong, J; Vonwimmerspergtoeller, J; Botterill, D; Clifft, R; Edgecock, T; Haywood, S; Maley, P; Norton, P; Thompson, J; Wright, A; Blochdevaux, 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; Litke, A; Mcneil, M; Taylor, G; Booth, C; Boswell, R; Brew, C; Cartwright, S; Combley, F; Kelly, M; Lehto, M; Newton, W; Reeve, J; Thompson, L; Bohrer, A; Brandt, S; Cowan, G; Grupen, C; Saraiva, P; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Musolino, G; Rothberg, J; Wasserbaech, S; Armstrong, S; 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; Yamartino, J; Zobernig, G

doi:10.1016/S0370-2693(97)00407-3

A measurement of Rb using five mutually exclusive hemisphere tags has been performed by ALEPH using the full LEP1 statistics. Three tags are designed to select the decay of the Z0 to b quarks, while the remaining two select Z0 decays to c and light quarks, and are used to measure the tagging efficiencies. The result, Rb = 0.2159 ± 0.0009 (stat) ± 0.0011 (syst), is in agreement with the electroweak theory prediction of 0.2158 ± 0.0003.

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1997). A measurement of Rb using mutually exclusive tags. PHYSICS LETTERS. SECTION B, 401(1-2), 163-175 [10.1016/S0370-2693(97)00407-3].