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Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
dc.contributor.author | Sirunyan, A. M. | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2018-10-31T02:38:00Z | pt_BR |
dc.date.issued | 2018 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/184229 | pt_BR |
dc.description.abstract | The pseudorapidity distributions of dijets as functions of their average transverse momentum (PTave) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS experiment at the CERN LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. A significant modification of the pPb spectra with respect to the pp spectra is observed in all pave T intervals investigated. The ratios of the pPb and pp distributions are compared to next-to-leading order perturbative quantum chromodynamics calculations with unbound nucleon and nuclear parton distribution functions (PDFs). These results give the first evidence that the gluon PDF at large Bjorken x in lead ions is strongly suppressed with respect to the PDF in unbound nucleons. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Melville. Vol. 121, no. 6 (Aug. 2018), 062002, 18 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Cromodinâmica quântica | pt_BR |
dc.subject | Colisao de ions pesados | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.title | Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001080362 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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