Speaker
Description
STAR collaboration has observed more strange hadrons in Cu+Cu collisions compared to Au+Au collisions at RHIC energy[1], $\sqrt{s_{NN}}$=200 GeV. We calculate the yield of $K, \Lambda, \Xi, \Omega$ using momentum integrated Boltzmann equation. Following a microscopic approach by considering possible hadronic interactions the strange hadron yields are calculated for different centralities of Cu+Cu collisions at midrapidity. Then the ratios of the yields of strange hadrons to pions are evaluated for a given number of participating nucleons and compared with the observed data. The calculation for Cu+Cu collisions is also compared with that of Au+Au collisions. The possibility of enhanced production in case of Cu+Cu collisions are analysed with different initial conditions.
[1]G. Agakishiev et al., for STAR Collaboration, PRL 108, 072301 (2012).