# Non Identical strange particle correlations in Au-Au collisions at $\sqrt{s_{NN}}=$ 200 GeV from the STAR experiment

Abstract : Information about the space-time evolution of colliding nuclei can be extracted correlating particles emitted from nuclear collisions. The high density of particles produced in the STAR experiment allows the measurement of non-identical strange particle correlations. Due to the absence of Coulomb interaction, $p-\Lambda$ and $\bar{p}-\Lambda$ systems are more sensitive to the source size than $p-p$ pairs. Strong interaction potential has been studied using $p-\Lambda$, and for the first time, $\bar{p}-\Lambda$ pairs. The experimental correlation functions have been described in the frame of a model based on the $p-n$ interaction. The first preliminary measurement of $\pi$ - $\Xi$ correlations has been performed, allowing to extract information about the freeze-out time and the space-time asymmetries in particle emission closely related to the transverse radial expansion and decay of resonances.
Document type :
Conference papers
Second Warsaw Meeting on Particles Correlations and Resonances in Heavy Ion Collisions, Oct 2003, Varsovie, Poland. Institute of Nuclear Chemistry and Technology, pp.S57-S60, 2003, Nukleonika 2004 vol. 49 suppl. 2

https://hal.archives-ouvertes.fr/hal-00122601
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Submitted on : Wednesday, January 3, 2007 - 7:16:56 PM
Last modification on : Monday, March 12, 2007 - 10:42:47 AM

### Citation

G. Renault, The Star Collaboration. Non Identical strange particle correlations in Au-Au collisions at $\sqrt{s_{NN}}=$ 200 GeV from the STAR experiment. Second Warsaw Meeting on Particles Correlations and Resonances in Heavy Ion Collisions, Oct 2003, Varsovie, Poland. Institute of Nuclear Chemistry and Technology, pp.S57-S60, 2003, Nukleonika 2004 vol. 49 suppl. 2. <hal-00122601>

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