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  • Measurements of the [formul...
    Alemanni, G.; Anderhub, H.; Bagnaia, P.; Bay, A.; Biasini, M.; Biland, A.; Blaising, J.J.; Böhm, A.; Boldizsar, L.; Bourquin, M.; Brigljevic, V.; Buijs, A.; Burger, J.D.; Burger, W.J.; Cai, X.D.; Castellini, G.; Cavallari, F.; Cavallo, N.; Cecchi, C.; Cerrada, M.; Chen, H.S.; Cifarelli, L.; Clare, R.; Costantini, S.; Csilling, A.; Degré, A.; Delmeire, E.; DeNotaristefani, F.; Engler, A.; Fabre, M.; Falciano, S.; Fedin, O.; Ferguson, T.; Garcia-Abia, P.; Gau, S.S.; Grimm, O.; Gupta, V.K.; Hidas, P.; Iashvili, I.; Josa-Mutuberrı́a, I.; Kaur, M.; Kienzle-Focacci, M.N.; Kim, D.; Kim, J.K.; Kiss, D.; Kraemer, R.W.; Lebrun, P.; Le Coultre, P.; Linde, F.L.; Liu, Z.A.; Luckey, D.; Lugnier, L.; Ma, W.G.; Marzano, F.; Muanza, G.S.; Napolitano, M.; Patricelli, S.; Paul, T.; Pauluzzi, M.; Pauss, F.; Pedace, M.; Perret-Gallix, D.; Pieri, M.; Plyaskin, V.; Raics, P.; Ren, D.; Reucroft, S.; Riemann, S.; Riles, K.; Saremi, S.; Salicio, J.; Sanchez, E.; Schmidt-Kaerst, S.; Sciarrino, D.; Seganti, A.; Servoli, L.; Shvorob, A.; Son, D.; Spillantini, P.; Steuer, M.; Sultanov, G.; Suter, H.; Tauscher, L.; Ting, S.M.; Tully, C.; Tung, K.L.; Uchida, Y.; Vicinanza, D.; Villa, S.; Vivargent, M.; Vodopianov, I.; Vogt, H.; Wadhwa, M.; Weber, M.; Wu, S.X.; Xia, L.; Xu, Z.Z.; Yeh, S.C.; Zhang, Z.P.; Zhu, R.Y.

    Physics letters. B, 7/2000, Letnik: 485, Številka: 1
    Journal Article

    The measurements of R b =σ( e + e − → b b ̄ )/σ( e + e − → q q ̄ ) and of the b quark forward–backward charge asymmetry, A fb b, at centre-of-mass energies above the Z pole are described. The measurement of R b is performed at s between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of A fb b is performed using the large statistics event sample collected at s =189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at s =189 GeV are R b =0.163±0.013 (stat.)±0.005 (syst.) , A fb b =0.61±0.18 (stat.)±0.09 (syst.) .