Neutral strange particle production in deep inelastic scattering at HERAстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:This paper presents measurements ofK 0 and Λ production in neutral current, deep inelastic scattering of 26.7 GeV electrons and 820 GeV protons in the kinematic range 10<Q 2<640 GeV2, 0.0003<x<0.01, andy>0.04. Average multiplicities forK 0 and Λ production are determined for transverse momentap T>0.5 GeV and pseudorapidities |η|<1.3. The multiplicities favour a stronger strange to light quark suppression in the fragmentation chain than found ine + e − experiments. The production properties ofK 0' s in events with and without a large rapidity gap with respect to the proton direction are compared. The ratio of neutralK 0' s to charged particles per event in the measured kinematic range is, within the present statistics, the same in both samples.