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...
| Autores: | ; ; ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/28864 |
| Acceso en línea: | https://hdl.handle.net/10902/28864 |
| Nivel de acceso: | Acceso abierto |
| _version_ | 1878733838353432576 |
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| author | Aaltonen, Timo Antero |
| 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 |
| author_browse | 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_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 |
| collection | UCrea Repositorio Abierto de la 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_5dfc91aeae6c5dc4be0bf78d955b4e2d |
| institution | Universidad de Cantabria (UC) |
| instname_str | Universidad de Cantabria (UC) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:repositorio.unican.es:10902/28864 |
| publishDate | 2013 |
| publishDateSort | 2013 |
| publisher | American Physical Society |
| publisherStr | American Physical Society |
| reponame_str | UCrea Repositorio Abierto de la Universidad de Cantabria |
| spelling | Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96 TeV 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 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. 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 Society https://hdl.handle.net/10902/28864 |
| spellingShingle | Measurement of the leptonic asymmetry in t¯t events produced in p¯p collisions at √s=1.96 TeV Aaltonen, Timo Antero |
| title | 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_short | 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 |
| url | https://hdl.handle.net/10902/28864 |