Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
A search is performed for top-quark pairs (tt¯) produced together with a photon (γ) with transverse energy greater than 20 GeV using a sample of tt¯ candidate events in final states with jets, missing transverse momentum, and one isolated electron or muon. The dataset used corresponds to an integrat...
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/53609 |
| Acesso em linha: | http://hdl.handle.net/11336/53609 |
| Access Level: | acceso abierto |
| Palavra-chave: | ATLAS TOP Photons https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| id |
AR_19c3cdc023dfd2a7fde6836fc47275fa |
|---|---|
| oai_identifier_str |
oai:ri.conicet.gov.ar:11336/53609 |
| network_acronym_str |
AR |
| network_name_str |
Argentina |
| repository_id_str |
|
| dc.title.none.fl_str_mv |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| title |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| spellingShingle |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector Aad, G. ATLAS TOP Photons https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| title_short |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| title_full |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| title_fullStr |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| title_full_unstemmed |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| title_sort |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector |
| dc.creator.none.fl_str_mv |
Aad, G. Abbott, B. Abdallah, J. Abdinov, O. Aben, R. Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, Maria Teresa Monticelli, Fernando Gabriel Wahlberg, Hernan Pablo Otero y Garzon, Gustavo Javier Piegaia, Ricardo Nestor Reisin, Hernan Diego Sacerdoti, Sabrina Zimmermann, C. Zimmermann, R. Zimmermann, S. Zimmermann, S. Zinonos, Z. Zinser, M. Ziolkowski, M. Živković, L. Zobernig, G. Zoccoli, A. Nedden, M. zur Zurzolo, G. Zwalinski, L. The ATLAS Collaboration |
| author |
Aad, G. |
| author_facet |
Aad, G. Abbott, B. Abdallah, J. Abdinov, O. Aben, R. Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, Maria Teresa Monticelli, Fernando Gabriel Wahlberg, Hernan Pablo Otero y Garzon, Gustavo Javier Piegaia, Ricardo Nestor Reisin, Hernan Diego Sacerdoti, Sabrina Zimmermann, C. Zimmermann, R. Zimmermann, S. Zinonos, Z. Zinser, M. Ziolkowski, M. Živković, L. Zobernig, G. Zoccoli, A. Nedden, M. zur Zurzolo, G. Zwalinski, L. The ATLAS Collaboration |
| author_role |
author |
| author2 |
Abbott, B. Abdallah, J. Abdinov, O. Aben, R. Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, Maria Teresa Monticelli, Fernando Gabriel Wahlberg, Hernan Pablo Otero y Garzon, Gustavo Javier Piegaia, Ricardo Nestor Reisin, Hernan Diego Sacerdoti, Sabrina Zimmermann, C. Zimmermann, R. Zimmermann, S. Zinonos, Z. Zinser, M. Ziolkowski, M. Živković, L. Zobernig, G. Zoccoli, A. Nedden, M. zur Zurzolo, G. Zwalinski, L. The ATLAS Collaboration |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
ATLAS TOP Photons https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| topic |
ATLAS TOP Photons https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| description |
A search is performed for top-quark pairs (tt¯) produced together with a photon (γ) with transverse energy greater than 20 GeV using a sample of tt¯ candidate events in final states with jets, missing transverse momentum, and one isolated electron or muon. The dataset used corresponds to an integrated luminosity of 4.59 fb−1 of proton-proton collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. In total 140 and 222 tt¯γ candidate events are observed in the electron and muon channels, to be compared to the expectation of 79±26 and 120±39 non-tt¯γ background events respectively. The production of tt¯γ events is observed with a significance of 5.3 standard deviations away from the null hypothesis. The tt¯γ production cross section times the branching ratio (BR) of the single-lepton decay channel is measured in a fiducial kinematic region within the ATLAS acceptance. The measured value is σfidtt¯γ=63±8(stat.)+17−13(syst.)±1(lumi.) per lepton flavor, in good agreement with the leading-order theoretical calculation normalized to the next-to-leading-order theoretical prediction of 48±10 fb. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-04 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/53609 Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; et al.; Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; D 91; 4-2015; 072007 1550-7998 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/53609 |
| identifier_str_mv |
Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; et al.; Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; D 91; 4-2015; 072007 1550-7998 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.91.072007 info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.072007 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
| dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
American Physical Society |
| publisher.none.fl_str_mv |
American Physical Society |
| dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
| instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
| reponame_str |
CONICET Digital (CONICET) |
| collection |
CONICET Digital (CONICET) |
| repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
| _version_ |
1799195019520770048 |
| spelling |
Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detectorAad, G.Abbott, B.Abdallah, J.Abdinov, O.Aben, R.Alconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, Maria TeresaMonticelli, Fernando GabrielWahlberg, Hernan PabloOtero y Garzon, Gustavo JavierPiegaia, Ricardo NestorReisin, Hernan DiegoSacerdoti, SabrinaZimmermann, C.Zimmermann, R.Zimmermann, S.Zimmermann, S.Zinonos, Z.Zinser, M.Ziolkowski, M.Živković, L.Zobernig, G.Zoccoli, A.Nedden, M. zurZurzolo, G.Zwalinski, L.The ATLAS CollaborationATLASTOPPhotonshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A search is performed for top-quark pairs (tt¯) produced together with a photon (γ) with transverse energy greater than 20 GeV using a sample of tt¯ candidate events in final states with jets, missing transverse momentum, and one isolated electron or muon. The dataset used corresponds to an integrated luminosity of 4.59 fb−1 of proton-proton collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. In total 140 and 222 tt¯γ candidate events are observed in the electron and muon channels, to be compared to the expectation of 79±26 and 120±39 non-tt¯γ background events respectively. The production of tt¯γ events is observed with a significance of 5.3 standard deviations away from the null hypothesis. The tt¯γ production cross section times the branching ratio (BR) of the single-lepton decay channel is measured in a fiducial kinematic region within the ATLAS acceptance. The measured value is σfidtt¯γ=63±8(stat.)+17−13(syst.)±1(lumi.) per lepton flavor, in good agreement with the leading-order theoretical calculation normalized to the next-to-leading-order theoretical prediction of 48±10 fb.Fil: Aad, G.. Aix-Marseille Université; FranciaFil: Abbott, B.. Oklahoma State University; Estados UnidosFil: Abdallah, J.. Academia Sinica; ChinaFil: Abdinov, O.. University of Amsterdam; Países BajosFil: Aben, R.. University of Bonn; AlemaniaFil: Alconada Verzini, María Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Alonso, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Arduh, Francisco Anuar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Dova, Maria Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Monticelli, Fernando Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Wahlberg, Hernan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Otero y Garzon, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Piegaia, Ricardo Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Reisin, Hernan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Sacerdoti, Sabrina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Zimmermann, C.. Universität Mainz; AlemaniaFil: Zimmermann, R.. University of Bonn; AlemaniaFil: Zimmermann, S.. Albert-Ludwigs-Universität; AlemaniaFil: Zimmermann, S.. University of Bonn; AlemaniaFil: Zinonos, Z.. Georg-August-Universität; AlemaniaFil: Zinser, M.. Universität Mainz; AlemaniaFil: Ziolkowski, M.. Universität Siegen; AlemaniaFil: Živković, L.. University of Belgrade; SerbiaFil: Zobernig, G.. University of Wisconsin; Estados UnidosFil: Zoccoli, A.. Università di Bologna; ItaliaFil: Nedden, M. zur. Humboldt University; AlemaniaFil: Zurzolo, G.. Università di Napoli; ItaliaFil: Zwalinski, L.. Cern - European Organization For Nuclear Research; SuizaFil: The ATLAS Collaboration. No especifica;American Physical Society2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/53609Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; et al.; Observation of top-quark pair production in association with a photon and measurement of the t¯tγ production cross section in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; D 91; 4-2015; 0720071550-7998CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.91.072007info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.072007info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:41:30Zoai:ri.conicet.gov.ar:11336/53609instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:41:30.874CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| score |
15,812429 |