Measurement of the forward-backward charge asymmetry and extraction of $sin^2Theta^{eff}_W$ in $p\bar{p} \to Z/\gamma^{}+X \to e^+e^-+X$ events produced at $\sqrt{s}=1.96$ TeV

We present a measurement of the forward-backward charge asymmetry ($A_{FB}$) in $p\bar{p} \to Z/\gamma^{*}+X \to e^+e^-+X$ events at a center-of-mass energy of 1.96 TeV using 1.1 fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron collider. $A_{FB}$ is measured as a function of...

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Veröffentlicht in:Physical review letters 2008, Vol.101
Hauptverfasser: Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., Aguilo, E., Ahn, S.H., Ahsan, M., Alexeev, G.D., Alkhazov, G., Alton, A., Alverson, G., Alves, G.A., Anastasoaie, M., Ancu, L.S., Andeen, T., Anderson, S., Andrieu, B., Anzelc, M.S., Aoki, M., Arnoud, Y., Arov, M., Arthaud, M., Askew, A., Asman, B., Assis Jesus, A.C.S., Atramentov, O., Avila, C., Badaud, F., Baden, A., Bagby, L., Baldin, B., Bandurin, D.V., Banerjee, P., Banerjee, S., Barberis, E., Barfuss, A.-F., Bargassa, P., Baringer, P., Barreto, J., Bartlett, J.F., Bassler, U., Bauer, D., Beale, S., Bean, A., Begalli, M., Begel, M., Belanger-Champagne, C., Bellantoni, L., Bellavance, A., Benitez, J.A., Beri, S.B., Bernardi, G., Bernhard, R., Bertram, I., Besançon, M., Beuselinck, R., Bezzubov, V.A., Bhat, P.C., Bhatnagar, V., Biscarat, C., Blazey, G., Blekman, F., Blessing, S., Bloch, D., Bloom, K., Boehnlein, A., Boline, D., Bolton, T.A., Boos, E.E., Borissov, G., Bose, T., Brandt, A., Brock, R., Brooijmans, G., Bross, A., Brown, D., Buchanan, N.J., Buchholz, D., Buehler, M., Buescher, V., Bunichev, V., Burdin, S., Burke, S., Burnett, T.H., Buszello, C.P., Butler, J.M., Calfayan, P., Calvet, S., Cammin, J., Carvalho, W., Casey, B.C.K., Castilla-Valdez, H., Chakrabarti, S., Chakraborty, D., Chan, K., Chan, K.M., Chandra, A., Charles, F.
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Sprache:eng
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Zusammenfassung:We present a measurement of the forward-backward charge asymmetry ($A_{FB}$) in $p\bar{p} \to Z/\gamma^{*}+X \to e^+e^-+X$ events at a center-of-mass energy of 1.96 TeV using 1.1 fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron collider. $A_{FB}$ is measured as a function of the invariant mass of the electron-positron pair, and found to be consistent with the standard model prediction. We use the $A_{FB}$ measurement to extract the effective weak mixing angle $sin^2Theta^{eff}_W = 0.2327 \pm 0.0018 (stat.) \pm 0.0006 (syst.)$.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.101.191801