Polarized Bhabha scattering and a precision measurement of the electron neutral current couplings

Abe, K; Abt, I; Ahn, C; Akagi, T; Ash, W; Aston, D; Bacchetta, N; Baird, K; Baltay, C; Band, H; Barakat, M; Baranko, G; Bardon, O; Barklow, T; Bazarko, A; Bendavid, R; Benvenuti, A; Bienz, T; Bilei, G; Bisello, D; Blaylock, G; Bogart, J; Bolton, T; Bower, G; Brau, J; Breidenbach, M; Bugg, W; Burke, D; Burnett, T; Burrows, P; Busza, W; Calcaterra, A; Caldwell, D; Calloway, D; Camanzi, B; Carpinelli, M; Cassell, R; Castaldi, R; Castro, A; Cavallisforza, M; Church, E; Cohn, H; Coller, J; Cook, V; Cotton, R; Cowan, R; Coyne, D; Doliveira, A; Damerell, C; Dasu, S; Desangro, R; Desimone, P; Dellorso, R; Dima, M; Pyc, D; Dubois, R; Eisenstein, B; Elia, R; Falciai, D; Fan, C; Fero, M; Frey, R; Furuno, K; Gillman, T; Gladding, G; Gonzalez, S; Hallewell, G; Hart, E; Hasegawa, Y; Hedges, S; Hertzbach, S; Hildreth, M; Huber, J; Huffer, M; Hughes, E; Hwang, H; Iwasaki, Y; Jacques, P; Jaros, J; Johnson, A; Johnson, J; Johnson, R; Junk, T; Kajikawa, R; Kalelkar, M; Karliner, I; Kawahara, H; Kendall, H; Kim, Y; King, M; King, R; Kofler, R; Krishna, N; Kroeger, R; Labs, J; Langston, M; Lath, A; Lauber, J; Leith, D; Liu, X; Loreti, M; Lu, A; Lynch, H; Ma, J; Mancinelli, G; Manly, S; Mantovani, G; Markiewicz, T; Maruyama, T; Massetti, R; Masuda, H; Mazzucato, E; Mckemey, A; Meadows, B; Messner, R; Mockett, P; Moffeit, K; Mours, B; Muller, G; Muller, D; Nagamine, T; Nauenberg, U; Neal, H; Nussbaum, M; Ohnishi, Y; Osborne, L; Panvini, R; Park, H; Pavel, T; Peruzzi, I; Pescara, L; Piccolo, M; Piemontese, L; Pieroni, E; Pitts, K; Plano, R; Prepost, R; Prescott, C; Punkar, G; Quigley, J; Ratcliff, B; Reeves, T; Rensing, P; Rochester, L; Rothberg, J; Rowson, P; Russell, J; Saxton, O; Schalk, T; Schindler, R; Schneekloth, U; Schumm, B; Seiden, A; Sen, S; Serbo, V; Shaevitz, M; Shank, J; Shapiro, G; Shapiro, S; Sherden, D; Simopoulos, C; Sinev, N; Smith, S; Snyder, J; Stamer, P; Steiner, H; Steiner, R; Strauss, M; Su, D; Suekane, F; Sugiyama, A; Suzuki, S; Swartz, M; Szumilo, A; Takahashi, T; Taylor, F; Torrence, E; Turk, J; Usher, T; Vavra, J; Vannini, C; Vella, E; Venuti, J; Verdini, P; Wagner, S; Waite, A; Watts, S; Weidemann, A; Whitaker, J; White, S; Wickens, F; Williams, D; Williams, D; Williams, S; Willocq, S; Wilson, R; Wisniewski, W; Woods, M; Word, G; Wyss, J; Yamamoto, R; Yamartino, J; Yang, X; Yellin, S; Young, C; Yuta, H; Zapalac, G; Zdarko, R; Zeitlin, C; Zhou, J

doi:10.1103/PhysRevLett.74.2880

Bhabha scattering with polarized electrons at the Z0 resonance has been measured with the SLD experiment at the SLAC Linear Collider. The first measurement of the left-right asymmetry in Bhabha scattering is presented, yielding the effective weak mixing angle of sin2θWeff=0.2245±0. 0049±0.0010. The effective electron couplings to the Z0 are extracted from a combined analysis of polarized Bhabha scattering and the left-right asymmetry previously published: υe=-0.0414±0.0020 and ae=-0.4977±0.0045.

Abe, K., Abt, I., Ahn, C., Akagi, T., Ash, W., Aston, D., et al. (1995). Polarized Bhabha scattering and a precision measurement of the electron neutral current couplings. PHYSICAL REVIEW LETTERS, 74(15), 2880-2884 [10.1103/PhysRevLett.74.2880].