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Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the single-lepton channel and EFT interpretation at root s=13 TeV

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dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J. W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDanilov, M.
dc.contributor.authorBychkova, O.
dc.contributor.authorChistov, R.
dc.contributor.authorParygin, P.
dc.contributor.authorPolikarpov, S.
dc.contributor.authorMatveev, V.
dc.contributor.authorДанилов, Михаил Владимирович
dc.contributor.authorЧистов, Руслан Николаевич
dc.contributor.authorПоликарпов, Сергей Михайлович
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.date.accessioned2024-11-30T01:29:43Z
dc.date.available2024-11-30T01:29:43Z
dc.date.issued2021
dc.description.abstractThe production cross section of a top quark pair in association with a photon is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set, corresponding to an integrated luminosity of 137 fb(-1), was recorded by the CMS experiment during the 2016-2018 data taking of the LHC. The measurements are performed in a fiducial volume defined at the particle level. Events with an isolated, highly energetic lepton, at least three jets from the hadronization of quarks, among which at least one is b tagged, and one isolated photon are selected. The inclusive fiducial t (t) over bar'gamma cross section, for a photon with transverse momentum greater than 20 GeV and pseudorapidity vertical bar eta vertical bar< 1.4442, is measured to be 798 +/- 7(stat) +/- 48(syst) fb, in good agreement with the prediction from the standard model at next-to-leading order in quantum chromodynamics. The differential cross sections are also measured as a function of several kinematic observables and interpreted in the framework of the standard model effective field theory (EFT), leading to the most stringent direct limits to date on anomalous electromagnetic dipole moment interactions of the top quark and the photon.
dc.identifier.citationMeasurement of the inclusive and differential t(t)over-bar gamma cross sections in the single-lepton channel and EFT interpretation at root s=13 TeV / Tumasyan, A [et al.] // Journal of High Energy Physics. - 2021. - № 12. - 10.1007/JHEP12(2021)180
dc.identifier.doi10.1007/JHEP12(2021)180
dc.identifier.urihttps://www.doi.org/10.1007/JHEP12(2021)180
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85122954120&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000736723900001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/25190
dc.relation.ispartofJournal of High Energy Physics
dc.titleMeasurement of the inclusive and differential t(t)over-bar gamma cross sections in the single-lepton channel and EFT interpretation at root s=13 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue12
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