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Article: Measurement of the ttZ and ttW cross sections in proton-proton collisions at √s=13 TeV with the ATLAS detector
Title | Measurement of the ttZ and ttW cross sections in proton-proton 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. 7, article no. 072009, p. 1-38 How to Cite? |
Abstract | A measurement of the associated production of a top-quark pair (t (t) over bar) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb(-1) of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The t (t) over barZ and t (t) over barW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are sigma(t (t) over barZ) = 0.95 +/- 0.08(stat )+/- 0.10(syst) pb and sigma(t (t) over barW) = 0.87 +/- 0.13(stat) +/- 0.14(syst) pb in agreement with the Standard Model predictions. The measurement of the t (t) over barZ cross section is used to set constraints on effective field theory operators which modify the t (t) over barZ vertex. |
Persistent Identifier | http://hdl.handle.net/10722/271268 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.587 |
ISI Accession Number ID |
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.contributor.author | Pizzimento, L | - |
dc.date.accessioned | 2019-06-24T01:06:37Z | - |
dc.date.available | 2019-06-24T01:06:37Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Physical Review D: covering particles, fields, gravitation, and cosmology, 2019, v. 99 n. 7, article no. 072009, p. 1-38 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.uri | http://hdl.handle.net/10722/271268 | - |
dc.description.abstract | A measurement of the associated production of a top-quark pair (t (t) over bar) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb(-1) of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The t (t) over barZ and t (t) over barW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are sigma(t (t) over barZ) = 0.95 +/- 0.08(stat )+/- 0.10(syst) pb and sigma(t (t) over barW) = 0.87 +/- 0.13(stat) +/- 0.14(syst) pb in agreement with the Standard Model predictions. The measurement of the t (t) over barZ cross section is used to set constraints on effective field theory operators which modify the t (t) over barZ vertex. | - |
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 | Measurement of the ttZ and ttW cross sections in proton-proton 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.99.072009 | - |
dc.identifier.scopus | eid_2-s2.0-85072076489 | - |
dc.identifier.hkuros | 298060 | - |
dc.identifier.volume | 99 | - |
dc.identifier.issue | 7 | - |
dc.identifier.spage | article no. 072009, p. 1 | - |
dc.identifier.epage | article no. 072009, p. 38 | - |
dc.identifier.isi | WOS:000466421900001 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2470-0010 | - |