Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV

Details Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV

2011-02-21

arxiv.org/abs/1102.4282v2

JHEP 05 (2011) 064

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1007/JHEP05(2011)064

The spectra of strange hadrons are measured in proton-proton collisions, recorded by the CMS experiment at the CERN LHC, at centre-of-mass energies of 0.9 and 7 TeV. The K^0_s, Lambda, and Xi^- particles and their antiparticles are reconstructed from their decay topologies and the production rates are measured as functions of rapidity and transverse momentum. The results are compared to other experiments and to predictions of the PYTHIA Monte Carlo program. The transverse momentum distributions are found to differ substantially from the PYTHIA results and the production rates exceed the predictions by up to a factor of three.

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