Measurement of the forward - backward asymmetry in Z ---> b anti-b and Z ---> c anti-c



CERN-LEP. ALEPH Collaboration. Measurement of the forward- backward asymmetry in Z --& gt; bbbar and Z --& gt; ccbar decays. Two methods are employed to select the quark asymmetries. The first uses high pt leptons to enrich the sample with b decays and the second fits the full pt range allowing both the b and c asymmetries to be measured.. These asymmetries correspond to the value of effective electroweak mixing angle, SIN2TW = 0.2262 +- 0.0053.
Date made available29 Jul 1991
  • Measurement of the forward-backward asymmetry in Z→bb and Z→cc

    Decamp, D., Deschizeaux, B., Goy, C., Lees, J. P., Minard, M. N., Alemany, R., Crespo, J. M., Delfino, M., Fernandez, E., Gaitan, V., Garrido, L., Mir, L. M., Pacheco, A., Catanesi, M. G., Creanza, D., de Palma, M., Farilla, A., Iaselli, G., Maggi, G., Maggi, M., & 80 othersNatali, S., Nuzzo, S., Quattromini, M., Ranieri, A., Raso, G., Romano, F., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Zito, G., Gao, Y., Hu, H., Huang, D., Huang, X., Lin, J., Lou, J., Qiao, C., Ruan, T., Wang, T., Xie, Y., Xu, D., Xu, R., Zhang, J., Zhao, W., Atwood, W. B., Bauerdick, L. A. T., Bird, F., Blucher, E., Bonvicini, G., Bossi, F., Brown, D., Burnett, T. H., Drevermann, H., Forty, R. W., Grab, C., Hagelberg, R., Haywood, S., Hilgart, J., Jost, B., Kasemann, M., Knobloch, J., Lacourt, A., Lançon, E., Lehraus, I., Lohse, T., Marchioro, A., Martinez, M., Mato, P., Menary, S., Minten, A., Miotto, A., Miquel, R., Moser, H. G., Nash, J., Palazzi, P., Ranjard, F., Redlinger, G., Roth, A., Rothberg, J., Rotscheidt, H., St.Denis, R., Schlatter, D., Takashima, M., Talby, M., Tejessy, W., Wachsmuth, H., Wasserbaech, S., Wheeler, S., Wiedenmann, W., Witzeling, W., Wotschack, J., Wu, W., Ajaltouni, Z., Bardadin-Otwinowska, M., Falvard, A., El Fellous, R., Gay, P., Henrard, P. & Jousset, J., 11 Jul 1991, In: Physics Letters B. 263, 2, p. 325-336

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