Model investigation of the longitudinal broadening of the transverse momentum two-particle correlator

The multiphase transport model is used to investigate the longitudinal broadening of the transverse momentum two-particle correlator C-2 (Delta eta, Delta phi), and its utility to extract the specific shear viscosity, eta/s , of the quark-gluon plasma formed in ultrarelativistic heavy ion collisions. The results from these model studies indicate that the longitudinal broadening of C-2 (Delta eta, Delta phi) is sensitive to the value of eta/s. However, reliable extraction of the longitudinal broadening of the correlator requires the suppression of possible self-correlations associated with the definition of the collision centrality.

Automated summary

The multiphase transport model is utilized to investigate the longitudinal broadening of the transverse momentum two-particle correlator C-2 (Delta eta, Delta phi), for extracting the specific shear viscosity, eta/s, of the quark-gluon plasma in ultrarelativistic heavy ion collisions. The results show that the longitudinal broadening is sensitive to eta/s value, but reliable extraction requires suppressing possible self-correlations related to the collision centrality definition.