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Measurement of top quark polarization in top-antitop events from proton-proton collisions at \sqrt{s}=7 TeV using the ATLAS detector

Measurement of top quark polarization in top-antitop ...

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dc.contributor.author Richter-Wąs, Elżbieta [SAP11013626] pl
dc.contributor.other Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2925 pl
dc.date.accessioned 2015-07-10T08:44:34Z
dc.date.available 2015-07-10T08:44:34Z
dc.date.issued 2013 pl
dc.identifier.issn 0031-9007 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/12381
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 3.0 *
dc.rights.uri http://creativecommons.org/licenses/by/3.0/legalcode *
dc.title Measurement of top quark polarization in top-antitop events from proton-proton collisions at \sqrt{s}=7 TeV using the ATLAS detector pl
dc.type JournalArticle pl
dc.abstract.en This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7  fb^{-1} of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at \sqrt{s}=7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of \alpha \ell P, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, \alpha \ell P_{CPC} =-0.035\pm 0.014\pm \left ( stat \right ) \pm 0.037\left ( syst \right ) and \alpha \ell P_{CPV}=0.020\pm 0.016\left ( stat \right )_{-0.017}^{+0.013}\left ( syst \right ), are in good agreement with the standard model prediction of negligible top quark polarization. pl
dc.description.volume 111 pl
dc.description.number 23 pl
dc.description.publication 1 pl
dc.identifier.doi 10.1103/PhysRevLett.111.232002 pl
dc.identifier.eissn 1079-7114 pl
dc.identifier.eissn 1092-0145 pl
dc.title.journal Physical Review Letters pl
dc.contributor.institution ATLAS Collaboration pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid 232002 pl
dc.rights.original CC-BY; inne; ostateczna wersja wydawcy; w momencie opublikowania; 0; pl
dc.identifier.project ROD UJ / P pl
.pointsMNiSW [2013 A]: 45


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Udzielam licencji. Uznanie autorstwa 3.0 Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 3.0