학술논문

Strangeness production at low Q2 in deep-inelastic ep scattering at HERA.
Document Type
Article
Source
European Physical Journal C -- Particles & Fields. May2009, Vol. 61 Issue 2, p185-205. 21p. 1 Diagram, 8 Charts, 12 Graphs.
Subject
*STRANGE particles
*HADRONS
*SCATTERING (Physics)
*MONTE Carlo method
*ASYMMETRY (Chemistry)
*MOMENTUM transfer
*PHASE space
SCATTERING
Language
ISSN
1434-6044
Abstract
The production of neutral strange hadrons is investigated using deep-inelastic scattering events measured with the H1 detector at HERA. The measurements are made in the phase space defined by the negative four-momentum transfer squared of the photon 2< Q2<100 GeV2 and the inelasticity 0.1< y<0.6. The K and $\varLambda(\bar{\varLambda})$ production cross sections and their ratios are determined. K production is compared to the production of charged particles in the same region of phase space. The Λ– $\bar{\varLambda}$ asymmetry is also measured and found to be consistent with zero. Predictions of leading order Monte Carlo programs are compared to the data. [ABSTRACT FROM AUTHOR]