Introduction
 STAR results
  Event observables
  HBT, interferometry
  High-pt phenomena
  Spectra and yields
  Strangeness
 Working groups
 Physics links

 

 


star physics results: Strange particles

Anti-baryon to baryon ratios are close to unity

The anti-baryon to baryon ratio supplies information about the amount of baryon transfer from the colliding nuclei to the central collision region. At RHIC there is a gap of 12 rapidity units between the two beams. More...



Strange particle yields increase smoothly as a function of centrality

One of the original Quark Gluon Plasma (QGP) signatures was that of a large increase in strange particle production. The liberation of quarks and gluons within a QGP means that quark anti-quark pairs can be created without the need to expend extra energy creating the other quarks required to bind them into hadrons. More...



Statistical models can be used to predict particle ratios

By studying the various ratios of particles created in heavy ion collisions we can learn about the chemical properties of the source. If particles are created in a thermally equilibrated medium the hadronic ratios can be predicted via the use of conservation laws with the only necessary free parameters being the chemical temperature and the baryochemical potential. More...



Strange particle mixed ratios: Saturation of strangeness production compared to SPS

The anti-Xi and anti-Lambda to h- ratios for the most central Au-Au data increase when compared to the most central SPS energies. However, the Xi/h- ratio stays constant and the Lambda/h- even decreases. More...



Systematics of the K/pi ratio

Kaons carry ~90% of the strange quarks produced in a collision hence the K/pi ratio can be used to study strangeness production and the possibility of strangeness enhancement. As the pi+yield ~ pi- yield it is possible to compare the STAR K+/pi- results to lower energy results on the K+/pi+. More...



Apparent scaling for the azimuthal anisotropy of Lambda and K0s

In Au-Au collisions at RHIC one of the first measurements was the observation of collective harmonic flow for charged hadrons and that this flow showed a strong pt dependence. This observation has since been extended to that the identified particles. More...



Apparent scaling for the azimuthal anisotropy of Lambda and K0s

In Au-Au collisions at RHIC one of the first measurements was the observation of collective harmonic flow for charged hadrons and that this flow showed a strong pt dependence. This observation has since been extended to that the identified particles. More...


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