Single-freeze-out model for ultrarelativistic heavy-ion collisions at &radicSNN; = 2.76 TeV.

The single-freeze-out model with parametrized hypersurface and flow geometry is employed to analyze the transverse-momentum spectra of hadrons produced in the Pb + Pb collisions at the collision energy of &radicsNN; = 2.76 TeV at the CERN Large Hadron Collider (LHC). With the notable exception for protons and antiprotons, we find a very good agreement between the model results and the data for the measured hadron species. The additional analysis of the Hanbury-Brown-Twiss (HBT) radii of pions helps us to select, from several different types of freeze-out studied in this work, the most realistic form of the freeze-out hypersurface. We find that the discrepancy ratio between the model and experiment for the proton and antiproton spectra depends on pT, dropping from 2 in the soft region to 1 around pr = 1.5 GeV. [ABSTRACT FROM AUTHOR]