Inclusive $\Lambda$ production in proton-proton collisions at 3.5 GeV - INSPIRE

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Inclusive $\Lambda$ production in proton-proton collisions at 3.5 GeV

HADES

Collaboration

•

J. Adamczewski-Musch
(
- Darmstadt, GSI
)

Nov 3, 2016

10 pages

Published in:

Phys.Rev.C 95 (2017) 1, 015207

Published: Jan 27, 2017

e-Print:

1611.01040 [nucl-ex]

DOI:

10.1103/PhysRevC.95.015207

Experiments:

GSI-HADES

View in:

reference search22 citations

Citations per year

Abstract: (APS)

The inclusive production of Λ hyperons in proton-proton collisions at s=3.18GeV was measured with HADES at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt. The experimental data are compared to a data-based model for individual exclusive Λ production channels in the same reaction. The contributions of intermediate resonances such as Σ(1385), Δ++, or N* are considered in detail. In particular, the result of a partial-wave analysis accounts for the abundant pK+Λ final state. Model and data show a reasonable agreement at midrapidities, while a difference is found for larger rapidities. A total Λ production cross section in p+p collisions at s=3.18GeV of σ(p+p→Λ+X)=207.3±1.3−7.3+6.0(stat.)±8.4(syst.)−0.5+0.4(model.)μb is found.

Note:

12 pages, 6 figures

inclusive production
Lambda: production
production: cross section
Sigma(1385)
Delta(1232)++
resonance
partial wave analysis
final state
rapidity
p: beam

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Figures(9)

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