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Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF.
Aaltonen, T; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Auerbach, B; Aurisano, A; Azfar, F; Badgett, W; Bae, T; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A; Barria, P; Bartos, P; Bauce, M; Bedeschi, F; Behari, S; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Bland, K R; Blumenfeld, B; Bocci, A; Bodek, A; Bortoletto, D; Boudreau, J; Boveia, A; Brigliadori, L; Bromberg, C; Brucken, E; Budagov, J; Budd, H S; Burkett, K; Busetto, G; Bussey, P; Butti, P; Buzatu, A; Calamba, A; Camarda, S; Campanelli, M.
Afiliação
  • Aaltonen T; Division of High Energy Physics, Department of Physics, University of Helsinki, FIN-00014 Helsinki, Finland; Helsinki Institute of Physics, FIN-00014 Helsinki, Finland.
  • Amerio S; Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Amidei D; University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Anastassov A; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Annovi A; Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
  • Antos J; Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
  • Apollinari G; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Appel JA; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Arisawa T; Waseda University, Tokyo 169, Japan.
  • Artikov A; Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
  • Asaadi J; Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA.
  • Ashmanskas W; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Auerbach B; Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Aurisano A; Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA.
  • Azfar F; University of Oxford, Oxford OX1 3RH, United Kingdom.
  • Badgett W; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bae T; Center for High Energy Physics, Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500
  • Barbaro-Galtieri A; Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Barnes VE; Purdue University, West Lafayette, Indiana 47907, USA.
  • Barnett BA; The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  • Barria P; Istituto Nazionale di Fisica Nucleare Pisa, Italy and University of Siena, Italy.
  • Bartos P; Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
  • Bauce M; Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Bedeschi F; Istituto Nazionale di Fisica Nucleare Pisa, Italy.
  • Behari S; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bellettini G; Istituto Nazionale di Fisica Nucleare Pisa, Italy and University of Pisa, Italy.
  • Bellinger J; University of Wisconsin, Madison, Wisconsin 53706, USA.
  • Benjamin D; Duke University, Durham, North Carolina 27708, USA.
  • Beretvas A; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bhatti A; The Rockefeller University, New York, New York 10065, USA.
  • Bland KR; Baylor University, Waco, Texas 76798, USA.
  • Blumenfeld B; The Johns Hopkins University, Baltimore, Maryland 21218, USA.
  • Bocci A; Duke University, Durham, North Carolina 27708, USA.
  • Bodek A; University of Rochester, Rochester, New York 14627, USA.
  • Bortoletto D; Purdue University, West Lafayette, Indiana 47907, USA.
  • Boudreau J; University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
  • Boveia A; Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
  • Brigliadori L; Istituto Nazionale di Fisica Nucleare Bologna, Italy and University of Bologna, I-40127 Bologna, Italy.
  • Bromberg C; Michigan State University, East Lansing, Michigan 48824, USA.
  • Brucken E; Division of High Energy Physics, Department of Physics, University of Helsinki, FIN-00014 Helsinki, Finland; Helsinki Institute of Physics, FIN-00014 Helsinki, Finland.
  • Budagov J; Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
  • Budd HS; University of Rochester, Rochester, New York 14627, USA.
  • Burkett K; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Busetto G; Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Italy and University of Padova, I-35131 Padova, Italy.
  • Bussey P; Glasgow University, Glasgow G12 8QQ, United Kingdom.
  • Butti P; Istituto Nazionale di Fisica Nucleare Pisa, Italy and University of Pisa, Italy.
  • Buzatu A; Glasgow University, Glasgow G12 8QQ, United Kingdom.
  • Calamba A; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Camarda S; Institut de Fisica d'Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain.
  • Campanelli M; University College London, London WC1E 6BT, United Kingdom.
Phys Rev Lett ; 113(4): 042001, 2014 Jul 25.
Article em En | MEDLINE | ID: mdl-25105608
ABSTRACT
We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton-antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with the Collider Detector at Fermilab and correspond to an integrated luminosity of 9.1 fb(-1). We measure the leptonic forward-backward asymmetry, A(FB)(ℓ), to be 0.072 ± 0.060 and the leptonic pair forward-backward asymmetry, A(FB)(ℓℓ), to be 0.076 ± 0.082. The measured values can be compared with the standard model predictions of A(FB)(ℓ) = 0.038 ± 0.003 and A(FB)(ℓℓ) = 0.048 ± 0.004, respectively. Additionally, we combine the A(FB)(ℓ) result with a previous determination from a final state with a single lepton and hadronic jets and obtain A(FB)(ℓ) = 0.090(-0.026)(+0.028).
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Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Finlândia
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Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Finlândia