2005/05/23 by M. Heinz, Mark Heinz, Heinz, Mark
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.48550/arxiv.nucl-ex/0505025
4 pages, Proceedings for the 40th Rencontres de Moriond (QCD), La Thuile, March 2004
arxiv created 2005/05/23 · arxiv updated 2009/12/01
We present measurements of the transverse momentum spectra for K0s, Lambda, Xi and their antiparticles in p+p collisions at √(s)=200 GeV. The extracted mid-rapidity yields and <pT> are in agreement with previous p+p experiments while they have smaller statistical errors. We compare the measured particle spectra and <pT> values to predictions from the PYTHIA leading order pQCD model (v6.221) and see significant disagreements with the default settings. Finally we compare the spectra to the latest calculations from NLO pQCD and see a good agreement for the K0s, but large discrepancies Lambda.