Publications [#245313] of Steffen A. Bass

Papers Published
  1. Asakawa, M; Bass, SA; Müller, B; Nonaka, C, Transverse velocity dependence of the proton-antiproton ratio as a signature of the QCD critical point., Physical Review Letters, vol. 101 no. 12 (September, 2008), pp. 122302 [doi] .

    The presence of a critical point in the QCD phase diagram can deform the trajectories describing the evolution of the expanding fireball in the mu_B-T phase diagram. If the average emission time of hadrons is a function of transverse velocity, as microscopic simulations of the hadronic freeze-out dynamics suggest, the deformation of the hydrodynamic trajectories will change the transverse velocity (beta_T) dependence of the proton-antiproton ratio when the fireball passes in the vicinity of the critical point. An unusual beta_T dependence of the [over]p/p ratio in a narrow beam energy window would thus signal the presence of the critical point.