Measurement of K0 S, Λ and Λ production at HERA

Journal article

The production of the neutral strange hadrons K0S, Λ and Λ 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, Λ (Λ) asymmetry and polarization have been measured in three kinematic regions: Q2 > 25 GeV2; 5 < Q2 < 25 GeV2; and in photoproduction (Q 2 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. © Springer-Verlag / Società Italiana di Fisica 2007.

Authors: Chekanov, S; Derrick, M; Magill, S; Miglioranzi, S; Musgrave, B

• Journal: European Physical Journal C
• Volume: 51
• Issue: 1
• Pages: 1-23
• Publication date: 2007-06-01
• DOI: 10.1140/epjc/s10052-007-0299-2
• EISSN: 1434-6052
• ISSN: 1434-6044
• Language: English