Bulk viscosity and energy-momentum correlations in high energy hadron   collisions
  We show how the measurement of appropriately constructed particle-energy/momentum correlations allows access to the bulk viscosity of strongly interacting hadron matter in heavy ion collisions. This measurement can be performed by the LHC and RHIC experiments in events with high-particle multiplicity, following up on existing estimates of the shear viscosity based on elliptic flow. 
Antonio Dobado, Felipe J. Llanes-Estrada and Juan M. Torres-Rincon   (Univ. Complutense Madrid)
hep-ph nucl-th