Average Transverse Energy Density for Pions, Kaons, φ Mesons and Ω Hyperons in the Most Central A + A Collisions at RHIC and LHC

We are studying, for several types of particles (π, K, φ, Ω) with different numbers of strange quarks, the dependencies of the average transverse energy at midrapidity in the central 0–5% Au + Au and Pb + Pb collisions over a wide range of √ s_NN from RHIC to LHC. We observe that the dependence for each particle type is described by a power-law function, and the exponent is universal for all studied particles—from light pions to multistrange Ω hyperons. This universal behavior leads to the fact that the ratios of the average transverse energy densities are practically independent of the collision energy, thus indicating a possible single mechanism for their formation. We consider this statement within the framework of the multipomeron exchange model.