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Observation of top quark production in proton-nucleus collisions

2017-12-14Journal article Open access
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dc.contributor.authorCMS collaboration (2254 authors)
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorGalinhas, Bruno
dc.contributor.authorGallinaro, Michele
dc.contributor.authorHollar, Jonathan
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorSeixas, Joao
dc.contributor.authorStrong, Giles
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.date.accessioned2019-02-05T15:08:18Z
dc.date.available2019-02-05T15:08:18Z
dc.date.issued2017-12-14
dc.date.updated2019-02-05T15:08:18Z
dc.description.abstractThe first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16  TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174  nb-1. The significance of the tt¯ signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σtt¯=45±8  nb, consistent with predictions from perturbative quantum chromodynamics.
dc.description.versionPeer Reviewed
dc.identifierPhys.Rev.Lett. 119 (2017) 242001; DOI 10.1103/PhysRevLett.119.242001
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.119.242001
dc.identifier.urihttp://hdl.handle.net/10400.26/27452
dc.language.isoeng
dc.titleObservation of top quark production in proton-nucleus collisions
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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