Publicação
Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector
| Resumo: | The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb−1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation. |
|---|---|
| Autores principais: | Onofre, A. |
| Outros Autores: | Castro, Nuno Filipe; ATLAS Collaboration |
| Assunto: | Ciências Naturais::Ciências Físicas |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438627668099072 |
|---|---|
| author | Onofre, A. |
| author2 | Castro, Nuno Filipe ATLAS Collaboration |
| author2_role | author author |
| author_facet | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Onofre, A.\"},{\"Person.name\":\"Castro, Nuno Filipe\"},{\"Person.name\":\"ATLAS Collaboration\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| datacite.date.Accepted.fl_str_mv | 2021-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2022-03-01T18:20:43Z |
| datacite.date.embargoed.fl_str_mv | 2022-03-01T18:20:43Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Ciências Naturais::Ciências Físicas |
| datacite.titles.title.fl_str_mv | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| dc.date.Accepted.fl_str_mv | 2021-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2022-03-01T18:20:43Z |
| dc.date.embargoed.fl_str_mv | 2022-03-01T18:20:43Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/76272 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Springer |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Ciências Naturais::Ciências Físicas |
| dc.title.fl_str_mv | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb−1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/818c1a05-96df-4759-aa14-53445311e1f7/download |
| id | rum_8f60f97ebed5dac3dec6c8ccd2beed18 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/76272 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/76272 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| publishDate | 2021 |
| publisher.none.fl_str_mv | Springer |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engSpringerporThe production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb−1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation.application/pdfporMeasurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detectorOnofre, A.Castro, Nuno FilipeATLAS CollaborationHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONAad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Zwalinski, L. (2021). Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector. [Article]. European Physical Journal C, 81(8). doi: 10.1140/epjc/s10052-021-09371-7ISSNIsPartOf1434-6044EISSNIsPartOf1434-6052DOIIsPartOf10.1140/epjc/s10052-021-09371-72022-03-01T18:20:43Z20212021-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/76272http://purl.org/coar/access_right/c_abf2open accesshttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Ciências Naturais::Ciências Físicas5305607 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/818c1a05-96df-4759-aa14-53445311e1f7/download |
| spellingShingle | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector Onofre, A. Ciências Naturais::Ciências Físicas |
| status | SINGLETON |
| subject.other.fl_str_mv | Ciências Naturais::Ciências Físicas |
| title | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| title_full | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| title_fullStr | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| title_full_unstemmed | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| title_short | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| title_sort | Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector |
| topic | Ciências Naturais::Ciências Físicas |
| topic_facet | Ciências Naturais::Ciências Físicas |
| url | https://hdl.handle.net/1822/76272 |
| visible | 1 |