Measurement of $\Delta$ and $K^{\ast }$ Production in $d$+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Abstract

The measurements of the transverse momentum spectra and the invariant mass distributions of $\Delta (1232)$ $\to \pi p$, $K^{\ast }(892)\to \pi K$ resonances in $d$+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV using the STAR Time Projection Chamber (TPC) at RHIC are presented. The in-medium modification of the $\Delta$ and $K^{\ast }$ mass and width has been studied as a function of transverse momentum ($p_T$). The particle ratios $K^{\ast }/K$, $\Delta /p$ and the average transverse momentum ($<p_T>$) as a function of different collision centrality has been reported. The nuclear modification factors ($R_{CP}$ and $R_{dAu}$) of $\Delta$ and $K^{\ast }$ are discussed.

5 pages, 9 figures, proceeding (poster) of the 18th International Conference on Nucleus-Nucleus Collisions (QM2005), Aug.4-9, Budapest, Hungary

References in corpus (7)

• Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au+Au collisions at s(NN)**(1/2) = 200-GeV
• Cronin Effect and High-p_T Suppression in pA Collisions
• Parton saturation and N_part scaling of semi--hard processes in QCD
• Energy Dependence of the Cronin Effect from Non-Linear QCD Evolution
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• Saturation and parton level Cronin effect: enhancement vs suppression of gluon production in p-A and A-A collisions
• a0+(980)-resonance production in pp->dK+Kbar0 reactions close to threshold

Cited by in corpus (1)

• $\Delta$ self-energy at finite temperature and density and the $\pi N$ cross-section