Investigation of freezeout parameters and other thermodynamic quantities with changing pseudorapidity at 0.9 TeV in pp collisions

The charged particles in different pseudorapidity intervals are analyzed by the thermodynamically consistent Tsallis distribution at 0.9 TeV in proton-proton collisions. We extract the effective temperature, T, and the non-extensive parameter, q. The former decreases while the later increases toward the forward pseudorapidities. Using the parameters T and q obtained from the Tsallis distribution, we calculate the particle density, n, energy density, ε, pressure, P and squared speed of sound, c²_s at kinetic freezeout. All these quantities are larger at mid-pseudo-rapidity and decrease towards the forward pseudo-rapdity regions.