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dc.contributor.authorALICE Collaboration
dc.date.accessioned2020-03-30T07:01:18Z
dc.date.available2020-03-30T07:01:18Z
dc.date.issued2020
dc.identifier.citationALICE Collaboration. (2020). Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC. <i>Physical Review Letters</i>, <i>124</i>(9), Article 092301. <a href="https://doi.org/10.1103/PhysRevLett.124.092301" target="_blank">https://doi.org/10.1103/PhysRevLett.124.092301</a>
dc.identifier.otherCONVID_35126351
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/68357
dc.description.abstractThe study of the strength and behavior of the antikaon-nucleon ((K) over bar N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+ p circle plus K- (p) over bar) and (K- p circle plus K+ (p) over bar) pairs measured in pp collisions at root s = 5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K- p circle plus K+ (p) over bar) with a significance of 4.4 sigma constitutes the first experimental evidence for the opening of the ((K) over bar (0)(n) circle plus K-0 (n) over bar) breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Julich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the (K) over barN threshold for low-energy QCD chiral models.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Letters
dc.rightsCC BY 4.0
dc.subject.othersigma-hyperon production
dc.subject.othernucleon interactions
dc.subject.otherchiral dynamics
dc.subject.otherp interactions
dc.subject.otherlambda(1405)
dc.titleScattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202003302569
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineFysiikkafi
dc.contributor.oppiaineYdin- ja kiihdytinfysiikan huippuyksikköfi
dc.contributor.oppiainePhysicsen
dc.contributor.oppiaineCentre of Excellence in Nuclear and Accelerator Based Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn0031-9007
dc.relation.numberinseries9
dc.relation.volume124
dc.type.versionpublishedVersion
dc.rights.copyright© 2020 CERN, for the ALICE Collaboration
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.doi10.1103/PhysRevLett.124.092301
dc.type.okmA1


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