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Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at $\sqrt{{s}_{NN}}$ = 5.02 TeV

2017-09-10Journal article Open access
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dc.contributor.authorCMS collaboration (2270 authors)
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorCalpas, Betty
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorHollar, Jonathan
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSeixas, Joao
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.contributor.authorPela, Joao
dc.date.accessioned2019-02-04T12:03:02Z
dc.date.available2019-02-04T12:03:02Z
dc.date.issued2017-09-10
dc.date.updated2019-02-04T12:03:01Z
dc.description.abstractThe CMS Collaboration presents the first measurement of the differential cross section of jets from charm quarks produced in proton–lead (pPb) collisions at a nucleon–nucleon center-of-mass energy of sNN=5.02TeV , as well as results from charm quark jets in proton–proton (pp) collisions at s=2.76 and 5.02 TeV . By comparing the yields of the pPb and pp collision systems at the same energy, a nuclear modification factor for charm jets from 55 to 400  GeV/c in pPb collisions at sNN=5.02TeV of RpA=0.92±0.07(stat)±0.11(syst) is obtained. This is consistent with an absence of final-state energy loss for charm quarks in pPb collisions. In addition, the fraction of jets coming from charm quarks is found to be consistent with that predicted by pythia 6 for pp collisions at s=2.76 and 5.02 TeV , and is independent of the jet transverse momentum from 55 to 400  GeV/c .
dc.description.versionPeer Reviewed
dc.identifierPhys.Lett. B772 (2017) 306-329; DOI 10.1016/j.physletb.2017.06.053
dc.identifier.urihttp://dx.doi.org/10.1016/j.physletb.2017.06.053
dc.identifier.urihttp://hdl.handle.net/10400.26/27260
dc.language.isoeng
dc.titleMeasurements of the charm jet cross section and nuclear modification factor in pPb collisions at $\sqrt{{s}_{NN}}$ = 5.02 TeV
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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