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Baryon-baryon correlations in Au+Au collisions at square root sNN = 62 GeV and square root sNN = 200 GeV, measured in the STAR experiment at RHIC

Gos H.

Nukleonika

2006

Vol. 51,suppl.3

59-63

Particle correlations at small relative velocities can be used to study the space-time evolution of hot and expanding system created in heavy-ion collisions. Baryon and antibaryon source sizes extracted from baryon-baryon correlations complement the information deduced from the correlation studies of identical pions. Correlations of nonidentical particles are sensitive also to the space-time asymmetry of their emission. High statistics data set of STAR experiment allows us to present the results of baryon-baryon correlation measurements at various centralities and energies, as well as to take carefully into account the particle identification probability and the fraction of primary baryons and antibaryons. Preliminary results show significant contribution of annihilation channel in baryon-antibaryon correlations.

Particle correlations to be seen by ALICE

Pluta J., Chajęcki Z., Gos H., Skowroński P.

Nukleonika

2004

Vol. 49,suppl.2

103-108

The possibilities of ALICE experiment in measurements of particle correlations are estimated by computer simulations. A dedicated software has been created with the aim to study the influence of different experimental factors on the shape of correlation functions and with the intention to serve in the future for the analysis of real data. A scheme of correlation analysis is described shortly and some of the first results are presented. This analysis is being performed in the frame of ALICE "Physics Performance Report".