Publicação
Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector
| Resumo: | This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively. |
|---|---|
| Autores principais: | Onofre, A. |
| Outros Autores: | Castro, Nuno Filipe; ATLAS Collaboration |
| Assunto: | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| Ano: | 2020 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1866271234755395584 |
|---|---|
| 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 | 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 | Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| datacite.date.Accepted.fl_str_mv | 2020-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-01-18T00:04:18Z |
| datacite.date.embargoed.fl_str_mv | 2021-01-18T00:04:18Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| datacite.titles.title.fl_str_mv | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| dc.contributor.none.fl_str_mv | Universidade do Minho |
| dc.creator.none.fl_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| dc.date.Accepted.fl_str_mv | 2020-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-01-18T00:04:18Z |
| dc.date.embargoed.fl_str_mv | 2021-01-18T00:04:18Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/69340 |
| 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 | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| dc.title.fl_str_mv | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://prod-dspace.uminho.pt/bitstreams/948bd87e-4fab-44e0-8c11-4fc70e4d0a6b/download |
| id | rum_4e1a246d00f8729d6c1d502eb91cf1f5 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/69340 |
| 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:1822/69340 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| publishDate | 2020 |
| 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 | engSpringerporThis paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.application/pdfporSearch for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detectorOnofre, A.Castro, Nuno FilipeATLAS CollaborationHostingInstitutionOrganizationalUniversidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf1126-6708DOIIsPartOf10.1007/jhep10(2020)0612021-01-18T00:04:18Z20202020-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/69340http://purl.org/coar/access_right/c_abf2open accessBeyond Standard ModelHadron-Hadron scattering (experiments)Heavy quark productionJet substructureJets1780771 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://prod-dspace.uminho.pt/bitstreams/948bd87e-4fab-44e0-8c11-4fc70e4d0a6b/download |
| spellingShingle | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector Onofre, A. Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| status | SINGLETON |
| subject.fl_str_mv | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| title | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| title_full | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| title_fullStr | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| title_full_unstemmed | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| title_short | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| title_sort | Search for tt¯ resonances in fully hadronic final states in pp collisions at s√ = 13 TeV with the ATLAS detector |
| topic | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| topic_facet | Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production Jet substructure Jets |
| url | https://hdl.handle.net/1822/69340 |
| visible | 1 |