Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector
We present a measurement of the top quark mass and of the top-antitop (tt̅ ) pair production cross section using pp̅ data collected with the CDF II detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding to an integrated luminosity of 2.9 fb-1. We select eve...
| Autores: | , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2010 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/2008 |
| Acceso en línea: | http://hdl.handle.net/10902/2008 |
| Access Level: | acceso abierto |
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Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detectorAaltonen, Timo AnteroÁlvarez González, BárbaraCasal Laraña, BrunoCuevas Maestro, Francisco JavierGómez Gramuglio, Gervasio|||0000-0002-1077-6553Rodrigo Anoro, TeresaRuiz Jimeno, Alberto|||0000-0002-3639-0368Scodellaro, Luca|||0000-0002-4974-8330Vila Álvarez, Iván |||0000-0002-6797-7209Vilar Cortabitarte, Rocío|||0000-0003-2045-8054We present a measurement of the top quark mass and of the top-antitop (tt̅ ) pair production cross section using pp̅ data collected with the CDF II detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding to an integrated luminosity of 2.9 fb-1. We select events with six or more jets satisfying a number of kinematical requirements imposed by means of a neural-network algorithm. At least one of these jets must originate from a b quark, as identified by the reconstruction of a secondary vertex inside the jet. The mass measurement is based on a likelihood fit incorporating reconstructed mass distributions representative of signal and background, where the absolute jet energy scale (JES) is measured simultaneously with the top quark mass. The measurement yields a value of 174.8±2.4(stat+JES)-1.0+1.2(syst) GeV/c2, where the uncertainty from the absolute jet energy scale is evaluated together with the statistical uncertainty. The procedure also measures the amount of signal from which we derive a cross section, σtt̅ =7.2±0.5(stat)±1.0(syst)±0.4(lum) pb, for the measured values of top quark mass and JES.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 World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, United Kingdom; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland.American Physical SocietyUniversidad de Cantabria20102010-03-30journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/2008Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 81(5), 052011reponame: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:10902/20082026-06-02T12:39:31Z |
| dc.title.none.fl_str_mv |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| title |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| spellingShingle |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector Aaltonen, Timo Antero |
| title_short |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| title_full |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| title_fullStr |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| title_full_unstemmed |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| title_sort |
Measurement of the top quark mass and pp̅ →tt̅ cross section in the all-hadronic mode with the CDF II detector |
| dc.creator.none.fl_str_mv |
Aaltonen, Timo Antero Álvarez González, Bárbara Casal Laraña, Bruno Cuevas Maestro, Francisco Javier Gómez Gramuglio, Gervasio|||0000-0002-1077-6553 Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto|||0000-0002-3639-0368 Scodellaro, Luca|||0000-0002-4974-8330 Vila Álvarez, Iván |||0000-0002-6797-7209 Vilar Cortabitarte, Rocío|||0000-0003-2045-8054 |
| author |
Aaltonen, Timo Antero |
| author_facet |
Aaltonen, Timo Antero Álvarez González, Bárbara Casal Laraña, Bruno Cuevas Maestro, Francisco Javier Gómez Gramuglio, Gervasio|||0000-0002-1077-6553 Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto|||0000-0002-3639-0368 Scodellaro, Luca|||0000-0002-4974-8330 Vila Álvarez, Iván |||0000-0002-6797-7209 Vilar Cortabitarte, Rocío|||0000-0003-2045-8054 |
| author_role |
author |
| author2 |
Álvarez González, Bárbara Casal Laraña, Bruno Cuevas Maestro, Francisco Javier Gómez Gramuglio, Gervasio|||0000-0002-1077-6553 Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto|||0000-0002-3639-0368 Scodellaro, Luca|||0000-0002-4974-8330 Vila Álvarez, Iván |||0000-0002-6797-7209 Vilar Cortabitarte, Rocío|||0000-0003-2045-8054 |
| author2_role |
author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Universidad de Cantabria |
| description |
We present a measurement of the top quark mass and of the top-antitop (tt̅ ) pair production cross section using pp̅ data collected with the CDF II detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding to an integrated luminosity of 2.9 fb-1. We select events with six or more jets satisfying a number of kinematical requirements imposed by means of a neural-network algorithm. At least one of these jets must originate from a b quark, as identified by the reconstruction of a secondary vertex inside the jet. The mass measurement is based on a likelihood fit incorporating reconstructed mass distributions representative of signal and background, where the absolute jet energy scale (JES) is measured simultaneously with the top quark mass. The measurement yields a value of 174.8±2.4(stat+JES)-1.0+1.2(syst) GeV/c2, where the uncertainty from the absolute jet energy scale is evaluated together with the statistical uncertainty. The procedure also measures the amount of signal from which we derive a cross section, σtt̅ =7.2±0.5(stat)±1.0(syst)±0.4(lum) pb, for the measured values of top quark mass and JES. |
| publishDate |
2010 |
| dc.date.none.fl_str_mv |
2010 2010-03-30 |
| 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 |
http://hdl.handle.net/10902/2008 |
| url |
http://hdl.handle.net/10902/2008 |
| 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 - Particles, Fields, Gravitation and Cosmology, 2010, 81(5), 052011 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 |
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UCrea Repositorio Abierto de la Universidad de Cantabria |
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1869405933711392768 |
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15,301629 |