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Article: Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s=13 TeV with the ATLAS detector
Title | Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s=13 TeV with the ATLAS detector |
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Authors | |
Issue Date | 2019 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prd/ |
Citation | Physical Review D: covering particles, fields, gravitation, and cosmology, 2019, v. 99 n. 5, article no. 052009 , p. 1-36 How to Cite? |
Abstract | A search for four-top-quark production, tttt, is presented. It is based on proton-proton collision data with a center-of-mass energy s=13 TeV collected by the ATLAS detector at the Large Hadron Collider during the years 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb-1. Data are analyzed in both the single-lepton and opposite-sign dilepton channels, characterized by the presence of one or two isolated electrons or muons with high-transverse momentum and multiple jets. A data-driven method is used to estimate the dominant background from top-quark pair production in association with jets. No significant excess above the Standard Model expectation is observed. The result is combined with the previous same-sign dilepton and multilepton searches carried out by the ATLAS Collaboration and an observed (expected) upper limit of 5.3 (2.1) times the four-top-quark Standard Model cross section is obtained at 95% confidence level. Additionally, an upper limit on the anomalous four-top-quark production cross section is set in the context of an effective field theory model. |
Persistent Identifier | http://hdl.handle.net/10722/269561 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.587 |
ISI Accession Number ID | |
Grants |
DC Field | Value | Language |
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dc.contributor.author | ATLAS Collaboration | - |
dc.contributor.author | Lo, CY | - |
dc.contributor.author | Orlando, N | - |
dc.contributor.author | Paredes Hernandez, DK | - |
dc.contributor.author | Tu, Y | - |
dc.date.accessioned | 2019-04-24T08:10:12Z | - |
dc.date.available | 2019-04-24T08:10:12Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Physical Review D: covering particles, fields, gravitation, and cosmology, 2019, v. 99 n. 5, article no. 052009 , p. 1-36 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.uri | http://hdl.handle.net/10722/269561 | - |
dc.description.abstract | A search for four-top-quark production, tttt, is presented. It is based on proton-proton collision data with a center-of-mass energy s=13 TeV collected by the ATLAS detector at the Large Hadron Collider during the years 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb-1. Data are analyzed in both the single-lepton and opposite-sign dilepton channels, characterized by the presence of one or two isolated electrons or muons with high-transverse momentum and multiple jets. A data-driven method is used to estimate the dominant background from top-quark pair production in association with jets. No significant excess above the Standard Model expectation is observed. The result is combined with the previous same-sign dilepton and multilepton searches carried out by the ATLAS Collaboration and an observed (expected) upper limit of 5.3 (2.1) times the four-top-quark Standard Model cross section is obtained at 95% confidence level. Additionally, an upper limit on the anomalous four-top-quark production cross section is set in the context of an effective field theory model. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prd/ | - |
dc.relation.ispartof | Physical Review D: covering particles, fields, gravitation, and cosmology | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s=13 TeV with the ATLAS detector | - |
dc.type | Article | - |
dc.identifier.email | Orlando, N: norlando@hku.hk | - |
dc.identifier.email | Paredes Hernandez, DK: dparedes@hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevD.99.052009 | - |
dc.identifier.scopus | eid_2-s2.0-85064385824 | - |
dc.identifier.hkuros | 297617 | - |
dc.identifier.volume | 99 | - |
dc.identifier.issue | 5 | - |
dc.identifier.spage | article no. 052009, p. 1 | - |
dc.identifier.epage | article no. 052009, p. 36 | - |
dc.identifier.isi | WOS:000462909800001 | - |
dc.publisher.place | United States | - |
dc.relation.project | Search for New Physics in Final States Containing Top Quarks in Run II at the ATLAS | - |
dc.identifier.issnl | 2470-0010 | - |