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dc.contributor.authorALICE Collaboration
dc.contributor.authorChang, BeomSu
dc.contributor.authorKim, Dong Jo
dc.contributor.authorRak, Jan
dc.contributor.authorRäsänen, Sami
dc.contributor.authorSlupecki, Maciej
dc.contributor.authorSnellman, Tomas
dc.contributor.authorTrzaska, Wladyslaw
dc.contributor.authorVargyas, Márton
dc.contributor.authorViinikainen, Jussi
dc.date.accessioned2017-07-03T08:44:28Z
dc.date.available2017-07-03T08:44:28Z
dc.date.issued2017
dc.identifier.citationALICE Collaboration. (2017). Production of π0 and η mesons up to high transverse momentum in pp collisions at 2.76 TeV. <em>European Physical Journal C</em>, 77 (5), 339. <a href="https://doi.org/10.1140/epjc/s10052-017-4890-x">doi:10.1140/epjc/s10052-017-4890-x</a>
dc.identifier.otherTUTKAID_74058
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/54803
dc.description.abstractThe invariant differential cross sections for inclusive π0 and η mesons at midrapidity were measured in pp collisions at √s = 2.76 TeV for transverse momenta 0.4 < pT < 40 GeV/c and 0.6 < pT < 20 GeV/c, respectively, using the ALICE detector. This large range in pT was achieved by combining various analysis techniques and different triggers involving the electromagnetic calorimeter (EMCal). In particular, a new single-cluster, shower-shape based method was developed for the identification of highpT neutral pions, which exploits that the showers originating from their decay photons overlap in the EMCal. Above 4 GeV/c, the measured cross sections are found to exhibit a similar power-law behavior with an exponent of about 6.3. Next-to-leading-order perturbative QCD calculations differ from the measured cross sections by about 30% for the π0, and between 30–50% for the η meson, while generator-level simulations with PYTHIA 8.2 describe the data to better than 10–30%, except at pT < 1 GeV/c. The new data can therefore be used to further improve the theoretical description of π0 and η meson production.
dc.language.isoeng
dc.publisherSpringer Berlin Heidelberg
dc.relation.ispartofseriesEuropean Physical Journal C
dc.subject.otherhiukkasfysiikka
dc.subject.otherparticel physics
dc.subject.otherproton-proton collisions
dc.subject.otherpions
dc.subject.othereta mesons
dc.titleProduction of π0 and η mesons up to high transverse momentum in pp collisions at 2.76 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201706283119
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-06-28T03:17:11Z
jyx.noteAn erratum to this article is available at https://doi.org/10.1140/epjc/s10052-017-5144-7
jyx.note.urihttps://doi.org/10.1140/epjc/s10052-017-5144-7
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1434-6044
dc.relation.volume77
dc.type.versionpublishedVersion
dc.rights.copyright© CERN for the benefit of the CMS collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License. Funded by SCOAP3.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1140/epjc/s10052-017-4890-x


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© CERN for the benefit of the CMS collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License. Funded by SCOAP3.
Except where otherwise noted, this item's license is described as © CERN for the benefit of the CMS collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License. Funded by SCOAP3.