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

Abstract

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

conference proceedings, Strangeness in Quark Matter 2004, 5 pages, submitted to Journal Physics G, final version submitted to journal incl. modifications requested by editor

References in corpus (2)

• Strange particle production in $p+p$ collisions at $\sqrt{s}$= 200 GeV
• Overview of Hard processes at RHIC: high-pt light hadron and charm production

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