Kshort and Lambda production in pp interactions at sqrt(s) = 0.9 and 7 TeV measured with the ATLAS detector at the LHC

Wahid Bhimji, Andy Buckley, Philip Clark, Robert Harrington, Victoria Martin, ATLAS Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

The production of Kshort and Lambda hadrons is studied in inelastic pp collisions at sqrt(s) = 0.9 and 7 TeV collected with the ATLAS detector at the LHC using a minimum-bias trigger. The observed distributions of transverse momentum, rapidity, and multiplicity are corrected to hadron level in a model-independent way within well defined phase-space regions. The distribution of the production ratio of Lambdabar to Lambda baryons is also measured. The results are compared with various Monte Carlo simulation models. Although most of these models agree with data to within 15% in the Kshort distributions, substantial disagreements with data are found in the Lambda distributions of transverse momentum.
Original languageEnglish
Article number12001
JournalPhysical Review D
VolumeD85
DOIs
Publication statusPublished - 2012

Keywords

  • hep-ex

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