Measurement of $K^0_{S}$, $\Lambda$, $\bar{\Lambda}$ production at HERA

Chekanov, S.; Derrick, M.; Magill, S.; Miglioranzi, S.; Musgrave, B.; Nicholass, D.; Repond, J.; Yoshida, R.; Mattingly, M.C.K.; Jechow, M.

doi:10.1140/epjc/s10052-007-0299-2

Measurement of $K^0_{S}$ , $\Lambda$ , $\bar{\Lambda}$ production at HERA

ZEUS

Collaboration

Dec, 2006

46 pages

Published in:

Eur.Phys.J.C 51 (2007) 1-23

e-Print:

hep-ex/0612023 [hep-ex]

DOI:

10.1140/epjc/s10052-007-0299-2

Report number:

DESY-06-226

Experiments:

DESY-HERA-ZEUS

View in:

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Abstract:

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.

Note:

40 pages, 20 figures, 1 table, minor revisions, accepted by European Physical Journal C Report-no: DESY-06-226

electron p: colliding beams
electron p: deep inelastic scattering
strange particle: electroproduction
strange particle: photoproduction
strange particle: hadronic decay
K0(S)
Lambda
Antilambda
hadron: multiple production
yield: ratio

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Measurement of KS0K^0_{S}KS0​, Λ\LambdaΛ, Λˉ\bar{\Lambda}Λˉ production at HERA

Citations per year

Measurement of $K^0_{S}$ , $\Lambda$ , $\bar{\Lambda}$ production at HERA