Strangeness production in deep inelastic muon nucleon scattering at 280 GeV

European Muon Collaboration,M. Arneodo, A. Arvidson, J. J. Aubert,B. Badelek, J. Beaufays,C. P. Bee, C. Benchouk, G. Berghoff,I. Bird,D. Blum, E. Böhm,X. de Bouard,F. W. Brasse,H. Braun, C. Broll,S. Brown, H. Brück,H. Calen, J. S. Chima,J. Ciborowski, R. Clifft,G. Coignet, F. Combley,J. Coughlan,G. D'Agostini,S. Dahlgren, F. Dengler, I. Derado, T. Dreyer, J. Drees,M. Düren, V. Eckhardt,A. Edwards,M. Edwards,T. Ernst, G. Eszes, J. Favier,M. I. Ferrero, J. Figiel,W. Flauger,J. Foster, E. Gabathuler, J. Gajewski,R. Gamet, J. Gayler, N. Geddes, P. Grafström,F. Grard,J. Haas, E. Hagberg, F. J. Hasert,P. Hayman, P. Heusse, M. Jaffré, A. Jacholkowska, F. Janata, G. Jancso,A. S. Johnson,E. M. Kabuss, G. Kellner,V. Korbel,J. Krüger,S. Kullander, U. Landgraf, D. Lanske,J. Loken,K. Long, M. Maire,P. Malecki,A. Manz, S. Maselli,W. Mohr, F. Montanet, H. E. Montgomery,E. Nagy,J. Nassalski,P. R. Norton,F. G. Oakham, A. M. Osborne,C. Pascaud,B. Pawlik, P. Payre,C. Peroni, H. Peschel,H. Pessard, J. Pettingale, B. Pietrzyk, B. Pönsgen, M. Pötsch,P. Renton,P. Ribarics, K. Rith, E. Rondio,A. Sandacz,M. Scheer, A. Schlagböhmer, H. Schiemann, N. Schmifz, M. Schneegans,M. Scholz,T. Schröder,M. Schouten,K. Schultze, T. Sloan, H. E. Stier, M. Studt,G. N. Taylor, J. M. Thénard,J. C. Thompson,A. de la Torre, J. Toth,L. Urban,W. Wallucks, M. Whalley,S. Wheeler,W. S. C. Williams,S. J. Wimpenny,R. Windmolders

European Physical Journal C（1987）

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摘要

The production of strange particles has been studied in a 280 GeV muon nucleon scattering experiment with acceptance and particle identification over a large kinematical range. The data show that at large values ofx Bj the interactions take place mostly on au valence quark in agreement with the basic quarkparton model predictions. This feature results in a strong forward-backward asymmetry in the distribution of strangeness along the rapidity axis. The data are compatible with a strange to non-strange quark suppression factor of ≈0.3 and with a strong suppression of strange diquarks. The distributions ofK+K− pairs show that the two kaons are preferentially produced at neighbouring values of rapidity.

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关键词

Model Prediction,Elementary Particle,Quantum Field Theory,Suppression Factor,Particle Acceleration

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