The STAR experiment

• Run preparation Run VI (2006)
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What remains unclear, who does what when and how.

The hit container was decided to be following the StEvent model i.e. a derived
class from StHit adding enumeration for the new detector layers. Andrew and

Will innclude plots answer questions related to vertexing so we can
remove all made-up speculations on this front.

Recent results from Au+Au collisions in STAR at RHIC show that the intermediate transverse mass region of various identified particle spectra can be scaled onto a single universal curve. Modifications of the spectra at low transverse mass, due to flow effects, cause a breakdown of the scaling.

The medium produced in high-energy heavy-ion collisions may modify the properties, spectra, and yields of resonance particles relative to those measured in more elementary p+p collisions. We will present the first measurements of the Xi*(1530) from Au+Au collisions at sqrt(s)=200 GeV in STAR. Results will be shown for several centrality classes and we will compare our results with measurements from p+p and d+Au collisions at the same collision energy in the same detector. A comparison will also be made with recent model calculations.

Abstract for SQM :

Recent results from RHIC have shown that there is an enhanced baryon/meson ratio in the intermediate transverse momentum range (2 < pT < 6 GeV/c) in Au+Au collisions at both $\sqrt(s_NN)% = 130 and 200 GeV. This was initially demonstrated by measurements of the pbar/pi- ratio which was then extended in $p_{T}$ by the Lambda/K0s ratio. Together with measurements of the ratio of particle production in central collisions with respect to peripheral collisions, denoted as R${_CP}$, the data were successfully described by models utilising different hadronization mechanisms: those having recombination of quarks and models having an interplay between flow, jet quenching and incorporating baryon junction loops.