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  • Abazov, V. M. (author)

Measurement of leptonic asymmetries and top-quark polarization in t(t)over-bar production

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-195372
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-195372URI
  • https://doi.org/10.1103/PhysRevD.87.011103DOI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We present measurements of lepton (l) angular distributions in top-quark (t) pair production and t (t) over bar -> W(+)bW-(b) over bar -> l(+) vbl-(v) over bar(b) over bar decays produced in p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV, where l is an electron or muon. Using data corresponding to an integrated luminosity of 5.4 fb(-1), collected with the D0 detector at the Fermilab Tevatron Collider, we measure for the first time the leptonic forward-backward asymmetry in dilepton final states and obtain A(FB)(l) = (5.8 +/- 5.1(stat) +/- 1.3(syst))%, corrected for detector acceptance. This is compared to the standard model prediction of A(FB)(l)(predicted) = (4.7 +/- 0.1)%. A deviation from the standard model prediction as previously seen in a D0 measurement based on the analysis of the l + jets final state is not observed in these dilepton final states. The two results differ from each other by 1.4 standard deviations and are combined to obtain A(FB)(l) = (11.8 +/- 3.2)%. Furthermore, we present a first study of the top-quark polarization.

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  • Abbott, B. (author)
  • Acharya, B. S. (author)
  • Adams, M. (author)
  • Adams, T. (author)
  • Alexeev, G. D. (author)
  • Alkhazov, G. (author)
  • Alton, A. (author)
  • Alverson, G. (author)
  • Askew, A. (author)
  • Atkins, S. (author)
  • Augsten, K. (author)
  • Avila, C. (author)
  • Badaud, F. (author)
  • Bagby, L. (author)
  • Baldin, B. (author)
  • Bandurin, D. V. (author)
  • Banerjee, S. (author)
  • Barberis, E. (author)
  • Baringer, P. (author)
  • Bartlett, J. F. (author)
  • Bassler, U. (author)
  • Bazterra, V. (author)
  • Bean, A. (author)
  • Begalli, M. (author)
  • Bellantoni, L. (author)
  • Beri, S. B. (author)
  • Bernardi, G. (author)
  • Bernhard, R. (author)
  • Bertram, I. (author)
  • Besancon, M. (author)
  • Beuselinck, R. (author)
  • Bhat, P. C. (author)
  • Bhatia, S. (author)
  • Bhatnagar, V. (author)
  • Blazey, G. (author)
  • Blessing, S. (author)
  • Bloom, K. (author)
  • Boehnlein, A. (author)
  • Boline, D. (author)
  • Boos, E. E. (author)
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  • Brandt, A. (author)
  • Brandt, O. (author)
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  • Brown, D. (author)
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  • Bu, X. B. (author)
  • Buehler, M. (author)
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  • Bunichev, V. (author)
  • Burdin, S. (author)
  • Buszello, Claus PUppsala universitet,Högenergifysik(Swepub:uu)clabu867 (author)
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  • Cooke, M. (author)
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  • Denisov, D. (author)
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  • Dubey, A. (author)
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  • Duggan, D. (author)
  • Duperrin, A. (author)
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  • Evans, H. (author)
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  • Greder, S. (author)
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  • Grohsjean, A. (author)
  • Gruenendahl, S. (author)
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  • Hagopian, S. (author)
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  • Hays, J. (author)
  • Head, T. (author)
  • Hebbeker, T. (author)
  • Hedin, D. (author)
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  • Heinson, A. P. (author)
  • Heintz, U. (author)
  • Hensel, C. (author)
  • Heredia-De La Cruz, I. (author)
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  • Uppsala universitetHögenergifysik (creator_code:org_t)

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  • In:Physical Review D87:1, s. 011103-1550-79981550-2368

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Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
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Alton, A.
Alverson, G.
Askew, A.
Atkins, S.
Augsten, K.
Avila, C.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Baringer, P.
Bartlett, J. F.
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Bazterra, V.
Bean, A.
Begalli, M.
Bellantoni, L.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
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Bhat, P. C.
Bhatia, S.
Bhatnagar, V.
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Rominsky, M.
Ross, A.
Royon, C.
Rubinov, P.
Ruchti, R.
Sajot, G.
Salcido, P.
Sanchez-Hernande ...
Sanders, M. P.
Santos, A. S.
Savage, G.
Sawyer, L.
Scanlon, T.
Schamberger, R. ...
Scheglov, Y.
Schellman, H.
Schlobohm, S.
Schwanenberger, ...
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shary, V.
Shaw, S.
Shchukin, A. A.
Shivpuri, R. K.
Simak, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Smith, K. J.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold ...
Sonnenschein, L.
Soustruznik, K.
Stark, J.
Stoyanova, D. A.
Strauss, M.
Suter, L.
Svoisky, P.
Takahashi, M.
Titov, M.
Tokmenin, V. V.
Tsai, Y. -T
Tschann-Grimm, K ...
Tsybychev, D.
Tuchming, B.
Tully, C.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
Van Kooten, R.
van Leeuwen, W. ...
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, P.
Verkheev, A. Y.
Vertogradov, L. ...
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vokac, P.
Wahl, H. D.
Wang, M. H. L. S ...
Warchol, J.
Watts, G.
Wayne, M.
Weichert, J.
Welty-Rieger, L.
White, A.
Wicke, D.
Williams, M. R. ...
Wilson, G. W.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Yamada, R.
Yang, S.
Yang, W. -C
Yasuda, T.
Yatsunenko, Y. A ...
Ye, W.
Ye, Z.
Yin, H.
Yip, K.
Youn, S. W.
Yu, J. M.
Zennamo, J.
Zhao, T.
Zhao, T. G.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
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Physical Review ...
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Uppsala University

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