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Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target
Univ Erlangen Nurnberg, Inst Phys, D-91054 Erlangen, Germany..
Ist Nazl Fis Nucl, Trieste Sect, I-34127 Trieste, Italy..
Joint Inst Nucl Res, Dubna 141980, Russia..
Univ Turin, Dept Phys, I-10125 Turin, Italy..
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2017 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 767, 133-141 p.Article in journal (Refereed) Published
Abstract [en]

Precise measurements of charged-kaon multiplicities in deep inelastic scattering were performed. The results are presented in three-dimensional bins of the Bjorken scaling variable x, the relative virtual-photon energy y, and the fraction z of the virtual-photon energy carried by the produced hadron. The data were obtained by the COMPASS Collaboration by scattering 160 GeV muons off an isoscalar (LiD)-Li-6 target. They cover the kinematic domain 1 (GeV/c)(2) < Q(2) < 60 (GeV/c)(2) in the photon virtuality, 0.004 < x < 0.4, 0.1 < y < 0.7, 0.20 < z < 0.85, and W > 5 GeV/c(2) in the invariant mass of the hadronic system. The results from the sum of the z-integrated K+ and K- multiplicities at high x point to a value of the non-strange quark fragmentation function larger than obtained by the earlier DSS fit.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2017. Vol. 767, 133-141 p.
Keyword [en]
Deep inelastic scattering, Kaon multiplicities, Quark fragmentation functions, Strange quark
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-320021DOI: 10.1016/j.physletb.2017.01.053ISI: 000397861700023OAI: oai:DiVA.org:uu-320021DiVA: diva2:1088632
Funder
German Research Foundation (DFG)EU, European Research Council, 283286
Available from: 2017-04-13 Created: 2017-04-13 Last updated: 2017-04-13Bibliographically approved

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