Pseudorapidity and centrality dependence of the transverse energy flow in PbPb collisions at image from CMS

The measurement of the transverse energy density per unit of pseudorapidity image over a broad range of pseudo-rapidities for PbPb collisions at the center-of-mass energy of 2.76 TeV per nucleon pair is presented. For the 2.5% most central collisions, image at image was found to be 2.1 TeV. At all pseudo-rapidities the transverse energy per participating nucleon increases with the centrality of the collision. At image, the transverse energy density grows faster with collision energy than the charged hadron multiplicity and faster than the logarithmic scaling used to describe lower energy data up to 200 GeV. Obtained results are compared to results from earlier experiments and with theoretical models.