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dc.contributor.authorALICE Collaboration
dc.date.accessioned2018-08-10T09:50:37Z
dc.date.available2018-08-10T09:50:37Z
dc.date.issued2018
dc.identifier.citationALICE Collaboration. (2018). Neutral pion and η meson production in p–Pb collisions at √sNN = 5.02 TeV. <i>European Physical Journal C</i>, <i>78</i>(8), Article 624. <a href="https://doi.org/10.1140/epjc/s10052-018-6013-8" target="_blank">https://doi.org/10.1140/epjc/s10052-018-6013-8</a>
dc.identifier.otherCONVID_28201808
dc.identifier.otherTUTKAID_78474
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/59192
dc.description.abstractNeutral pion and η meson invariant differential yields were measured in non-single diffractive p–Pb collisions at √sNN = 5.02 TeV with the ALICE experiment at the CERN LHC. The analysis combines results from three complementary photon measurements, utilizing the PHOS and EMCal calorimeters and the Photon Conversion Method. The invariant differential yields of π0 and η meson inclusive production are measured near mid-rapidity in a broad transverse momentum range of 0.3 < pT < 20 GeV/c and 0.7 < pT < 20 GeV/c, respectively. The measured η/π0 ratio increases with pT and saturates for pT > 4 GeV/c at 0.483 ± 0.015stat ± 0.015sys. A deviation from mT scaling is observed for pT < 2 GeV/c. The measured η/π0 ratio is consistent with previous measurements from proton-nucleus and pp collisions over the full pT range. The measured η/π0 ratio at high pT also agrees within uncertainties with measurements from nucleus–nucleus collisions. The π0 and η yields in p–Pb relative to the scaled pp interpolated reference, RpPb, are presented for 0.3 < pT < 20 GeV/c and 0.7 < pT < 20 GeV/c, respectively. The results are compared with theoretical model calculations. The values of RpPb are consistent with unity for transverse momenta above 2 GeV/c. These results support the interpretation that the suppressed yield of neutral mesons measured in Pb–Pb collisions at LHC energies is due to parton energy loss in the hot QCD medium.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer Berlin Heidelberg
dc.relation.ispartofseriesEuropean Physical Journal C
dc.rightsCC BY 4.0
dc.subject.otherp-Pb collisions
dc.titleNeutral pion and η meson production in p–Pb collisions at √sNN = 5.02 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201808073750
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2018-08-07T06:15:10Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn1434-6044
dc.relation.numberinseries8
dc.relation.volume78
dc.type.versionpublishedVersion
dc.rights.copyright© CERN for the benefit of the ALICE collaboration 2018. Funded by SCOAP3.
dc.rights.accesslevelopenAccessfi
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1140/epjc/s10052-018-6013-8


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