  We show that the transverse-mass and rapidity spectra of protons and pions
produced in Au-Au collisions at sqrt(sNN) = 2.4 GeV can be well reproduced in a
thermodynamic model assuming single freeze-out of particles from a spherically
symmetric hypersurface. This scenario corresponds to a physical picture used by
Siemens and Rasmussen in the original formulation of the blast-wave model. Our
framework modifies and extends this approach by incorporation of a Hubble-like
expansion of QCD matter and inclusion of resonance decays. In particular, the
Delta(1232) resonance is taken into account, with a width obtained from the
virial expansion. Altogether, our results bring evidence for substantial
thermalization of the matter produced in heavy-ion collisions in a few GeV
energy regime and its nearly spherical expansion.
