Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7737
Title: Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at ?s NN = 5.02 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Distribution functions
Nuclear reactions
Quantum theory
Lead collisions
Transverse momenta
Center-of-mass energies
Issue Date: Aug-2018
Publisher: American Physical Society
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at √s NN = 5.02 TeV. Physical Review Letters, 121(6). doi:10.1103/PhysRevLett.121.062002
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 pTave 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.
URI: https://doi.org/10.1103/PhysRevLett.121.062002
https://hdl.handle.net/11147/7737
ISSN: 0031-9007
0031-9007
1079-7114
Appears in Collections:Mathematics / Matematik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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