Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV

We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic t¯t decays recorded with the CDF II detector using the full Tevatron Run II sample, corresponding to an integrated luminosity of 9.4  fb−1. A parametrization of the asymmetry as a function of qyℓ is used to co...

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Autores: Aaltonen, Timo Antero, Casal Laraña, Bruno, Cuevas Maestro, Francisco Javier, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Palencia Cortezón, José Enrique, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054, Vizán García, Jesús Manuel|||0000-0002-6823-8854
Tipo de documento: artigo
Data de publicação:2013
País:España
Recursos:Universidad de Cantabria (UC)
Repositório:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglês
OAI Identifier:oai:repositorio.unican.es:10902/28864
Acesso em linha:https://hdl.handle.net/10902/28864
Access Level:Acceso aberto
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spelling Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeVAaltonen, Timo AnteroCasal Laraña, BrunoCuevas Maestro, Francisco JavierGómez Gramuglio, Gervasio|||0000-0002-1077-6553Palencia Cortezón, José EnriqueRuiz Jimeno, Alberto|||0000-0002-3639-0368Scodellaro, Luca|||0000-0002-4974-8330Vilar Cortabitarte, Rocío|||0000-0003-2045-8054Vizán García, Jesús Manuel|||0000-0002-6823-8854We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic t¯t decays recorded with the CDF II detector using the full Tevatron Run II sample, corresponding to an integrated luminosity of 9.4  fb−1. A parametrization of the asymmetry as a function of qyℓ is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of AℓFB=0.094+0.032−0.029 is to be compared to the standard model next-to-leading-order prediction of AℓFB=0.038±0.003.We acknowledge the kind assistance of A. Falkowski and T. Tait in the construction of the Octet models as well as W. Bernreuther and G. Perez for helpful discussion. We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium für Bildung und Forschung, Germany; the Korean World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, U.K.; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; the Academy of Finland; the Australian Research Council (ARC); and the EU community Marie Curie Fellowship Contract No. 302103.American Physical SocietyUniversidad de Cantabria20132013-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/28864Physical Review D, 2013, 88(7), 072003reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/288642026-06-02T12:39:31Z
dc.title.none.fl_str_mv Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
title Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
spellingShingle Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
Aaltonen, Timo Antero
title_short Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
title_full Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
title_fullStr Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
title_full_unstemmed Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
title_sort Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96  TeV
dc.creator.none.fl_str_mv Aaltonen, Timo Antero
Casal Laraña, Bruno
Cuevas Maestro, Francisco Javier
Gómez Gramuglio, Gervasio|||0000-0002-1077-6553
Palencia Cortezón, José Enrique
Ruiz Jimeno, Alberto|||0000-0002-3639-0368
Scodellaro, Luca|||0000-0002-4974-8330
Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
Vizán García, Jesús Manuel|||0000-0002-6823-8854
author Aaltonen, Timo Antero
author_facet Aaltonen, Timo Antero
Casal Laraña, Bruno
Cuevas Maestro, Francisco Javier
Gómez Gramuglio, Gervasio|||0000-0002-1077-6553
Palencia Cortezón, José Enrique
Ruiz Jimeno, Alberto|||0000-0002-3639-0368
Scodellaro, Luca|||0000-0002-4974-8330
Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
Vizán García, Jesús Manuel|||0000-0002-6823-8854
author_role author
author2 Casal Laraña, Bruno
Cuevas Maestro, Francisco Javier
Gómez Gramuglio, Gervasio|||0000-0002-1077-6553
Palencia Cortezón, José Enrique
Ruiz Jimeno, Alberto|||0000-0002-3639-0368
Scodellaro, Luca|||0000-0002-4974-8330
Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
Vizán García, Jesús Manuel|||0000-0002-6823-8854
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
description We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic t¯t decays recorded with the CDF II detector using the full Tevatron Run II sample, corresponding to an integrated luminosity of 9.4  fb−1. A parametrization of the asymmetry as a function of qyℓ is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of AℓFB=0.094+0.032−0.029 is to be compared to the standard model next-to-leading-order prediction of AℓFB=0.038±0.003.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/28864
url https://hdl.handle.net/10902/28864
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Physical Review D, 2013, 88(7), 072003
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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