HAL : hal-00122601, version 1
 arXiv : hep-ex/0404024
 Second Warsaw Meeting on Particles Correlations and Resonances in Heavy Ion Collisions, Varsovie : Pologne (2003)
 Non Identical strange particle correlations in Au-Au collisions at $\sqrt{s_{NN}}=$ 200 GeV from the STAR experiment
 (15/10/2003)
 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.
 1 : Laboratoire SUBATECH Nantes (SUBATECH) CNRS : UMR6457 – IN2P3 – Université de Nantes – École Nationale Supérieure des Mines - Nantes
 Domaine : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/hep-ex/0404024
 hal-00122601, version 1 http://hal.archives-ouvertes.fr/hal-00122601 oai:hal.archives-ouvertes.fr:hal-00122601 Contributeur : Import Arxiv <> Soumis le : Mercredi 3 Janvier 2007, 19:16:56 Dernière modification le : Lundi 12 Mars 2007, 10:42:47