Measurement of the Effective Weak Mixing Angle in pp[over ¯]→Z/γ^{*}→e^{+}e^{-} Events.
V M Abazov, B Abbott, B S Acharya, M Adams, T Adams, J P Agnew, G D Alexeev, G Alkhazov, A Alton, A Askew, S Atkins, K Augsten, C Avila, F Badaud, L Bagby, B Baldin, D V Bandurin, S Banerjee, E Barberis, P Baringer, J F Bartlett, U Bassler, V Bazterra, A Bean, M Begalli, L Bellantoni, S B Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, P C Bhat, S Bhatia, V Bhatnagar, G Blazey, S Blessing, K Bloom, A Boehnlein, D Boline, E E Boos, G Borissov, M Borysova, A Brandt, O Brandt, R Brock, A Bross, D Brown, X B Bu, M Buehler, V Buescher, V Bunichev, S Burdin, C P Buszello, E Camacho-Pérez, B C K Casey, H Castilla-Valdez, S Caughron, S Chakrabarti, K M Chan, A Chandra, E Chapon, G Chen, S W Cho, S Choi, B Choudhary, S Cihangir, D Claes, J Clutter, M Cooke, W E Cooper, M Corcoran, F Couderc, M-C Cousinou, D Cutts, A Das, G Davies, S J de Jong, E De La Cruz-Burelo, F Déliot, R Demina, D Denisov, S P Denisov, S Desai, C Deterre, K DeVaughan, H T Diehl, M Diesburg, P F Ding, A Dominguez, A Dubey, L V Dudko, A Duperrin, S Dutt, M Eads, D Edmunds, J Ellison, V D Elvira, Y Enari, H Evans, V N Evdokimov, A Fauré, L Feng, T Ferbel, F Fiedler, F Filthaut, W Fisher, H E Fisk, M Fortner, H Fox, S Fuess, P H Garbincius, A Garcia-Bellido, J A García-González, V Gavrilov, W Geng, C E Gerber, Y Gershtein, G Ginther, O Gogota, G Golovanov, P D Grannis, S Greder, H Greenlee, G Grenier, Ph Gris, J-F Grivaz, A Grohsjean, S Grünendahl, M W Grünewald, T Guillemin, G Gutierrez, P Gutierrez, J Haley, L Han, K Harder, A Harel, J M Hauptman, J Hays, T Head, T Hebbeker, D Hedin, H Hegab, A P Heinson, U Heintz, C Hensel, I Heredia-De La Cruz, K Herner, G Hesketh, M D Hildreth, R Hirosky, T Hoang, J D Hobbs, B Hoeneisen, J Hogan, M Hohlfeld, J L Holzbauer, I Howley, Z Hubacek, V Hynek, I Iashvili, Y Ilchenko, R Illingworth, A S Ito, S Jabeen, M Jaffré, A Jayasinghe, M S Jeong, R Jesik, P Jiang, K Johns, E Johnson, M Johnson, A Jonckheere, P Jonsson, J Joshi, A W Jung, A Juste, E Kajfasz, D Karmanov, I Katsanos, M Kaur, R Kehoe, S Kermiche, N Khalatyan, A Khanov, A Kharchilava, Y N Kharzheev, I Kiselevich, J M Kohli, A V Kozelov, J Kraus, A Kumar, A Kupco, T Kurča, V A Kuzmin, S Lammers, P Lebrun, H S Lee, S W Lee, W M Lee, X Lei, J Lellouch, D Li, H Li, L Li, Q Z Li, J K Lim, D Lincoln, J Linnemann, V V Lipaev, R Lipton, H Liu, Y Liu, A Lobodenko, M Lokajicek, R Lopes de Sa, R Luna-Garcia, A L Lyon, A K A Maciel, R Madar, R Magaña-Villalba, S Malik, V L Malyshev, J Mansour, J Martínez-Ortega, R McCarthy, C L McGivern, M M Meijer, A Melnitchouk, D Menezes, P G Mercadante, M Merkin, A Meyer, J Meyer, F Miconi, N K Mondal, M Mulhearn, E Nagy, M Narain, R Nayyar, H A Neal, J P Negret, P Neustroev, H T Nguyen, T Nunnemann, J Orduna, N Osman, J Osta, A Pal, N Parashar, V Parihar, S K Park, R Partridge, N Parua, A Patwa, B Penning, M Perfilov, Y Peters, K Petridis, G Petrillo, P Pétroff, M-A Pleier, V M Podstavkov, A V Popov, M Prewitt, D Price, N Prokopenko, J Qian, A Quadt, B Quinn, P N Ratoff, I Razumov, I Ripp-Baudot, F Rizatdinova, M Rominsky, A Ross, C Royon, P Rubinov, R Ruchti, G Sajot, A Sánchez-Hernández, M P Sanders, A S Santos, G Savage, M Savitskyi, L Sawyer, T Scanlon, R D Schamberger, Y Scheglov, H Schellman, C Schwanenberger, R Schwienhorst, J Sekaric, H Severini, E Shabalina, V Shary, S Shaw, A A Shchukin, V Simak, P Skubic, P Slattery, D Smirnov, G R Snow, J Snow, S Snyder, S Söldner-Rembold, L Sonnenschein, K Soustruznik, J Stark, D A Stoyanova, M Strauss, L Suter, P Svoisky, M Titov, V V Tokmenin, Y-T Tsai, D Tsybychev, B Tuchming, C Tully, L Uvarov, S Uvarov, S Uzunyan, R Van Kooten, W M van Leeuwen, N Varelas, E W Varnes, I A Vasilyev, A Y Verkheev, L S Vertogradov, M Verzocchi, M Vesterinen, D Vilanova, P Vokac, H D Wahl, M H L S Wang, J Warchol, G Watts, M Wayne, J Weichert, L Welty-Rieger, M R J Williams, G W Wilson, M Wobisch, D R Wood, T R Wyatt, Y Xie, R Yamada, S Yang, T Yasuda, Y A Yatsunenko, W Ye, Z Ye, H Yin, K Yip, S W Youn, J M Yu, J Zennamo, T G Zhao, B Zhou, J Zhu, M Zielinski, D Zieminska, L Zivkovic
We present a measurement of the fundamental parameter of the standard model, the weak mixing angle sin^{2}θ_{eff}^{ℓ} which determines the relative strength of weak and electromagnetic interactions, in pp[over ¯]→Z/γ^{*}→e^{+}e^{-} events at a center of mass energy of 1.96 TeV, using data corresponding to 9.7 fb^{-1} of integrated luminosity collected by the D0 detector at the Fermilab Tevatron. The effective weak mixing angle is extracted from the forward-backward charge asymmetry as a function of the invariant mass around the Z boson pole. The measured value of sin^{2}θ_{eff}^{ℓ}=0.23147±0.00047 is the most precise measurement from light quark interactions to date, with a precision close to the best LEP and SLD results.
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