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

• Published in: Physics letters. B Vol. 767; no. C; pp. 133 - 141
• Main Authors: Aghasyan, M., Akhunzyanov, R., Alexeev, M.G., Anfimov, N.V., Augsten, K., Badełek, B., Balestra, F., Barth, J., Bernhard, J., Bicker, K., Birsa, R., Bressan, A., Capozza, L., Chatterjee, C., Choi, I., Cicuttin, A., Denisov, O.Yu, Dreisbach, Ch, Dziewiecki, M., Eversheim, P.D., Faessler, M., Finger, M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O.P., Gorzellik, M., Grabmüller, S., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F.H., Horikawa, N., d'Hose, N., Ishimoto, S., Ivanov, A., Joosten, R., Kabuß, E., Ketzer, B., Khokhlov, Yu.A., Kisselev, Yu, Koivuniemi, J.H., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V.F., Krämer, M., Kremser, P., Kroumchtein, Z.V., Magnon, A., Makins, N., Makke, N., Mallot, G.K., Martin, A., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G.V., Meyer, M., Meyer, W., Miyachi, Y., Nagaytsev, A., Nerling, F., Nowak, W.-D., Nukazuka, G., Pereira, F., Peshekhonov, D.V., Pierre, N., Quaresma, M., Ramos, S., Regali, C., Riedl, C., Rybnikov, A., Salac, R., Sandacz, A., Santos, C., Sarkar, S., Savin, I.A., Sbrizzai, G., Schmidt, K., Schönning, K., Sinha, L., Sirtl, S., Slunecka, M., Sozzi, F., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Sznajder, P., Tasevsky, M., Uhl, S., Veloso, J., Wallner, S., Weisrock, T., Wilfert, M., ter Wolbeek, J., Zavada, P., Zavertyaev, M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2017; Elsevier
• Subjects: Deep inelastic scattering; Kaon multiplicities; Nuclear Experiment; Physics; Quark fragmentation functions; Strange quark; Kaon multiplicities; Quark fragmentation functions; Deep inelastic scattering; Strange quark
• ISSN: 0370-2693; 1873-2445; 1873-2445
• DOI: 10.1016/j.physletb.2017.01.053

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 6LiD target. They cover the kinematic domain 1(GeV/c)2<Q2<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/c2 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.