Reevaluation of the Parton Distribution of Strange Quarks in the Nucleon

A. Airapetian,N. Akopov,Z. Akopov,E. C. Aschenauer,W. Augustyniak,A. Avetissian,E. Avetisyan,S. Belostotski,H. P. Blok,A. Borissov,V. Bryzgalov,J. Burns,M. Capiluppi,G. P. Capitani,E. Cisbani,G. Ciullo,M. Contalbrigo,P. F. Dalpiaz,W. Deconinck,R. De Leo,E. De Sanctis,M. Diefenthaler,P. Di Nezza,M. Duren,M. Ehrenfried,G. Elbakian,F. Ellinghaus,E. Etzelmueller,L. Felawka,S. Frullani,D. Gabbert,G. Gapienko,V. Gapienko,J. Garay Garcia,F. Garibaldi,G. Gavrilov,V. Gharibyan,F. Giordano,S. Gliske,M. Hartig,D. Hasch,M. Hoek,Y. Holler,I. Hristova,A. Ivanilov,H. E. Jackson,S. Joosten,R. Kaiser,G. Karyan,T. Keri,E. Kinney,A. Kisselev,V. Korotkov,V. Kozlov,P. Kravchenko,V. G. Krivokhijine,L. Lagamba,L. Lapikas,I. Lehmann, P. Lenisa,W. Lorenzon,X. -G. Lu,B. -Q. Ma,D. Mahon,S. I. Manaenkov,Y. Mao,B. Marianski,H. Marukyan,Y. Miyachi,A. Movsisyan,V. Muccifora,M. Murray,A. Mussgiller,Y. Naryshkin,A. Nass,M. Negodaev,W. -D. Nowak,L. L. Pappalardo,R. Perez-Benito,A. Petrosyan,P. E. Reimer,A. R. Reolon,C. Riedl,K. Rith,G. Rosner,A. Rostomyan, J. Rubin,D. Ryckbosch,Y. Salomatin,A. Schafer,G. Schnell,B. Seitz,T. -A. Shibata,M. Stahl,M. Statera,E. Steffens,J. J. M. Steijger,F. Stinzing,S. Taroian,A. Terkulov,R. Truty,A. Trzcinski,M. Tytgat,Y. Van Haarlem,C. Van Hulse,D. Veretennikov,V. Vikhrov,I. Vilardi,C. Vogel,S. Wang,S. Yaschenko,Z. Ye,S. Yen,B. Zihlmann,P. Zupranski

Proceedings of the XXII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2014) 28 April - 2 May（2014）

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摘要

An earlier extraction from the HERMES experiment of the polarization-averaged parton distribution of strange quarks in the nucleon has been reevaluated using final data on the multiplicities of charged kaons in semi-inclusive deep-inelastic scattering obtained with a kinematically more comprehensive method of correcting for experimental effects. General features of the distribution are confirmed, but the rise at low x is less pronounced than previously reported.

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parton distributions

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