Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target

C. Adolph 1 V. Andrieux 2 Y. Bedfer 2 L. Capozza 2 Q. Curiel 2 E. Fuchey 2 A. Ferrero 2 N. D'Hose 2 F. Kunne 2 M. Levillain 2 D. Neyret 2 S. Platchkov 2 E. Seder 2, 3, * F. Thibaud 2 M. Meyer 2 N. Pierre 2 O.Yu. Denisov 3, 4, * G.K. Mallot 3, *
* Auteur correspondant
1 Physikalisches Institut [Erlangen]
2 DPHN - Département de Physique Nucléaire (ex SPhN)
3 CERN [Genève]
4 University of Aveiro
Department of Physics and CICECO
Abstract : 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 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.
Keywords : Strange quark Deep inelastic scattering Kaon multiplicities Quark fragmentation functions
Type de document :
Article dans une revue
Physics Letters B, Elsevier, 2017, 767, pp.133-141. 〈10.1016/j.physletb.2017.01.053〉
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C. Adolph, V. Andrieux, Y. Bedfer, L. Capozza, Q. Curiel, et al.. Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target. Physics Letters B, Elsevier, 2017, 767, pp.133-141. 〈10.1016/j.physletb.2017.01.053〉. 〈cea-01535725〉

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