Transverse energy distributions and J/psi production in Pb plus Pb collisions - art. no. 054903

We have analyzed the latest NA50 data on transverse energy distributions an d J/psi suppression in Pb+Pb collisions. The transverse energy distribution was analyzed in the geometric model of AA collisions. In the geometric mod el, fluctuations in the number of NN collisions at a fixed impact parameter are taken into account. The transverse energy dependence of J/psi suppress ion was obtained following the model of Blaizot et al., where charmonium su ppression is assumed to be 100% effective above a threshold density. When f luctuations in the number of NN collisions are taken into account, the NA50 data on J/psi suppression can be well fitted with a single parameter, the threshold density.