Measurement of K0(S), Lambda, anti-Lambda production at HERA
(2007) European Physical Journal C. Particles and Fields — Vol. 51, p. 1-23 (2007)
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- Abstract
- (en) The production of the neutral strange hadrons $K^{0}_{S}$, $\Lambda$ and $\bar{\Lambda}$ has been measured in $ep$ collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, $\Lambda$ ($\bar{\Lambda}$) asymmetry and polarization have been measured in three kinematic regions: $Q^2 > 25 \gev^2$; $5 < Q^2 < 25 \gev^2$; and in photoproduction ($Q^2 \simeq 0$). In photoproduction the presence of two hadronic jets, each with at least $5 \gev$ transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at $e^+ e^-$ colliders, except for an enhancement of baryon relative to meson production in photoproduction. Comment: 40 pages, 20 figures, 1 table, minor revisions, accepted by European Physical Journal C
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Citations
Piotrzkowski, K., Chekanov, S., de Faverau, J., & et al. (2007). Measurement of K0(S), Lambda, anti-Lambda production at HERA. European Physical Journal C. Particles and Fields, 51, 1-23. https://doi.org/10.1140/epjc/s10052-007-0299-2 (Original work published 2007)