How well does NLO pQCD describe strangeness in $p+p$ collisions at $\sqrt{s}$= 200 GeV in STAR?

Details How well does NLO pQCD describe strangeness in $p+p$ collisions at $\sqrt{s}$= 200 GeV in STAR? How well does NLO pQCD describe strangeness in $p+p$ collisions at $\sqrt{s}$= 200 GeV in STAR?

2005-01-21

arxiv.org/abs/hep-ex/0501059v3

J.Phys. G31 (2005) S1011-S1014

Physics

High Energy Physics

High Energy Physics - Experiment

conference proceedings, Strangeness in Quark Matter 2004, 5 pages, submitted to Journal Physics G, final version submitted to

Scientific paper

10.1088/0954-3899/31/6/048

We present measurements of the transverse momentum spectra for $\mathrm{K^{0}_{S}}$, $\Lambda$, $\Xi$ and their antiparticles in p+p collisions at $\sqrt{s}=200 GeV$. The extracted mid-rapidity yields and $<\mathrm{p_{T}}>$ are in agreement with previous $p+\bar{p}$ experiments while they have smaller statistical errors. We compare the measured spectra for $\mathrm{K^{0}_{S}}$ and $\Lambda$ to the latest available calculations from NLO pQCD and see good agreement for the $\mathrm{K^{0}_{S}}$ above 1.5 GeV/c.

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