arXiv subjects

Javier Castillo

Publications and source records attributed to Javier Castillo.

2 recordsLinked to original sources

arXiv2004

Elliptic flow of multi-strange baryons Xi and Omega in Au+Au collisions at sqrt(s_NN)=200 GeV

The first measurement of the elliptic transverse flow for multi-strange baryons Xi and Omega in high energy heavy ion collisions is presented, which may indicate the presence of partonic collectivity. A hydrodynamically inspired model fit to the transverse momentum spectra and elliptic flow of Xi- and AntiXi+ indicates that these particles might be emitted from the system at a high temperature (~150 MeV) with significant radial transverse flow and that the emitting system is spatially asymmetric.

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arXiv2002

$Ξ^{-}$ and $\barΞ^{+}$ baryon production in Au+Au collisions at $\sqrt{s_{NN}}=130$ GeV

We report preliminary results on the centrality dependence of the $Ξ^{-}$ and $\barΞ^{+}$ production at mid-rapidity in $\sqrt{s_{NN}}=130$ GeV Au+Au collisions from the STAR experiment. For the most central data the obtained yields suggest a saturation of strangeness production per produced hadron. The calculated inverse slope parameter may indicate an earlier freeze-out of these particles.

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