Publications [#245292] of Steffen A. Bass

Papers Published
  1. Shen, C; Bass, SA; Hirano, T; Huovinen, P; Qiu, Z; Song, H; Heinz, U, The QGP shear viscosity–elusive goal or just around the corner?, Journal of Physics G: Nuclear and Particle Physics, vol. 38 no. 12 (Fall, 2011), pp. 124045-124045 [6350], [doi] .

    With the new viscous hydrodynamic + hadron cascade hybrid code VISHNU, a rather precise (25%) extraction of the quark gluon plasma (QGP) shear viscosity (η/s)QGP from heavy-ion elliptic flow data is possible if the initial eccentricity of the collision fireball is known with <5% accuracy. At this point, eccentricities from initial state models differ by up to 20%, leading to an (100%) uncertainty for (η/s)QGP. It is shown that a simultaneous comparison of elliptic and triangular flow, v2 and v3, puts strong constraints on initial state models and can largely eliminate the present uncertainty in (η/s)QGP. The variation of the differential elliptic flow v2(pT) for identified hadrons between RHIC and LHC energies provides additional tests of the evolution model. © 2011 IOP Publishing Ltd.