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dc.contributor.authorKarasu Uysal, Ayben
dc.contributor.authorALICE, Collaboration
dc.date.accessioned2019-07-08T09:18:46Z
dc.date.available2019-07-08T09:18:46Z
dc.date.issued2018
dc.identifier.citationhttps://doi.org/10.1140/epjc/s10052-018-5612-8en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12498/647
dc.description.abstractAn invariant differential cross section measure- ment of inclusive π 0 and η meson production at mid-rapidity in pp collisions at √s = 8 TeV was carried out by the ALICE experiment at the LHC. The spectra of π0 and η mesons were measured in transverse momentum ranges of 0.3 < pT < 35GeV/cand0.5 < pT < 35GeV/c, respectively. Next-to-leading order perturbative QCD cal- culations using fragmentation functions DSS14 for the π0 and AESSS for the η overestimate the cross sections of both neutral mesons, although such calculations agree with the measured η/π0 ratio within uncertainties. The results were also compared with PYTHIA 8.2 predictions for which the Monash 2013 tune yields the best agreement with the mea- sured neutral meson spectra. The measurements confirm a universal behavior of the η/π 0 ratio seen for NA27, PHENIX and ALICE data for pp collisions from √s = 27.5 GeV to √s = 8 TeV within experimental uncertainties. A rela- tion between the π0 and η production cross sections for pp collisions at √s = 8 TeV is given by m T scaling for pT > 3.5 GeV/c. However, a deviation from this empir- ical scaling rule is observed for transverse momenta below p T < 3.5 GeV/c in the η/π 0 ratio with a significance of 6.2σ .en_US
dc.subjectmeson production, cross section, LHC, ALICEen_US
dc.titleπ0 and η meson production in proton-proton collisions at √s=8 TeVen_US
dc.typeArticleen_US


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