Combinations of Single-Top-Quark Production Cross-Section Measurements and |fLvV_{tb}| Determinations at √s = 7 and 8 TeV with the ATLAS and CMS Experiments

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dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAaboud, M.
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D. C.
dc.contributor.authorAbdinov, O.
dc.contributor.authorAbed Abud, A.
dc.contributor.authorAbhayasinghe, D. K.
dc.contributor.authorIzen, Joseph M.
dc.contributor.authorMeirose, Bernhard
dc.contributor.authorReeves, Kendall
dc.contributor.authorATLAS Collaboration
dc.contributor.authorCMS Collaboration
dc.contributor.utdAuthorIzen, Joseph M.
dc.contributor.utdAuthorMeirose, Bernhard
dc.contributor.utdAuthorReeves, Kendall
dc.date.accessioned2020-03-03T22:11:00Z
dc.date.available2020-03-03T22:11:00Z
dc.date.issued2019-05-16
dc.description.abstractThis paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at √s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb⁻¹ at √s = 7 TeV and 12.2 to 20.3 fb⁻¹ at √s = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: t-channel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at √s = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at √s = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 ± 1.4 pb at √s = 8 TeV. The square of the magnitude of the CKM matrix element V_{tb} multiplied by a form factor fLV is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation |V_{td}|, |V_{ts}| ≪ |V_{tb}|. All the |fLVV_{tb}|² determinations, extracted from individual ratios at √s = 7 and 8 TeV, are combined, resulting in |fLVV_{tb}| = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions. © 2019, The Author(s).
dc.description.departmentSchool of Natural Sciences and Mathematics
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, D. C. Abbott, et al. 2019. "Combinations of single-top-quark production cross-section measurements and |fLVV_{tb}| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments." Journal of High Energy Physics 2019(5): art. 88, doi: 10.1007/JHEP05(2019)088
dc.identifier.issn1126-6708
dc.identifier.issue5
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP05(2019)088
dc.identifier.urihttps://hdl.handle.net/10735.1/7328
dc.identifier.volume2019
dc.language.isoen
dc.publisherSpringer Verlag
dc.rightsCC BY 4.0 (Attribution)
dc.rights©2019 CERN for the benefit of the ATLAS-CMS Collaboration
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.source.journalJournal of High Energy Physics
dc.subjectHadron-hadron scattering (experiments)
dc.subjectParticles (Nuclear physics)--Flavor
dc.subjectLarge Hadron Collider (France and Switzerland)
dc.subjectProton-proton interactions
dc.subjectStandard model (Nuclear physics)
dc.titleCombinations of Single-Top-Quark Production Cross-Section Measurements and |fLvV_{tb}| Determinations at √s = 7 and 8 TeV with the ATLAS and CMS Experiments
dc.type.genrearticle

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