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dc.creatorKhachatryan, V.
dc.creatorAdžić, Petar
dc.creatorĆirković, Predrag
dc.creatorDevetak, Damir
dc.creatorMilošević, Jovan
dc.creatorRekovic, V.
dc.creatorĐorđević, Miloš
dc.creatorMilenović, Predrag
dc.date.accessioned2018-03-01T16:43:56Z
dc.date.available2018-03-01T16:43:56Z
dc.date.issued2016
dc.identifier.issn2470-0010 (print)
dc.identifier.issn2470-0029 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/961
dc.description.abstractMeasurements of the top quark-antiquark (t (t) over bar) spin correlations and the top quark polarization are presented for t (t) over bar pairs produced in pp collisions at root s = 8 TeV. The data correspond to an integrated luminosity of 19.5 fb(-1) collected with the CMS detector at the LHC. The measurements are performed using events with two oppositely charged leptons (electrons or muons) and two or more jets, where at least one of the jets is identified as originating from a bottom quark. The spin correlations and polarization are measured from the angular distributions of the two selected leptons, both inclusively and differentially, with respect to the invariant mass, rapidity, and transverse momentum of the t (t) over bar system. The measurements are unfolded to the parton level and found to be in agreement with predictions of the standard model. A search for new physics in the form of anomalous top quark chromo moments is performed. No evidence of new physics is observed, and exclusion limits on the real part of the chromo-magnetic dipole moment and the imaginary part of the chromo-electric dipole moment are evaluated.en
dc.relationMarie-Curie programme, European Research Council, EPLANET (European Union), Leventis Foundation, A.P. Sloan Foundation, Alexander von Humboldt Foundation, Belgian Federal Science Policy Office, Fonds pour la Formation a la Recherche dans lIndustrie et dans lAgriculture (FRIA-Belgium), Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium), Ministry of Education, Youth and Sports (MEYS) of the Czech Republic, Council of Science and Industrial Research, India, HOMING PLUS programme of the Foundation for Polish Science, European Union, Regional Development Fund, National Science Center (Poland), Compagnia di San Paolo (Torino), MIUR (Italy) [20108T4XTM], Thalis programme - EU-ESF, Aristeia programme - EU-ESF, Greek NSRF, National Priorities Research Program by Qatar National Research Fund, Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand), Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand), Welch Foundation [C-1845]
dc.rightsopenAccessen
dc.sourcePhysical Review Den
dc.titleMeasurements of t(t)over-bar spin correlations and top quark polarization using dilepton final states in pp collisions at root s=8 TeVen
dc.typearticleen
dcterms.abstractРековиц, В.; Ћирковић Предраг; Кхацхатрyан, В.; Деветак Дамир; Aдзиц, П.; Милошевић Јован; Ђорђевић Милош; Миленовић Предраг;
dc.citation.volume93
dc.citation.issue5
dc.identifier.wos000371742000002
dc.identifier.doi10.1103/PhysRevD.93.052007
dc.citation.otherArticle Number: 052007
dc.contributor.countCMS Collaboration (ukupan broj autora: 2288)
dc.identifier.scopus2-s2.0-84962244796
dc.identifier.fulltexthttp://vinar.vin.bg.ac.rs//bitstream/id/14337/957.pdf


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