Speaker
Description
Two-particle correlations are powerful tools for studying the medium produced in heavy-ion collisions. In particular, two-particle transverse momentum correlations enable measurements of features of the collision dynamics sensitive to momentum currents. Their evolution with collision centrality, i.e. system life time, provides information about shear viscosity, $\eta$/s, and about system relaxation time, $\tau_{\pi}$. We report on measurements of two-particle transverse momentum correlations in nine centrality intervals from Pb-Pb collisions taken at the LHC with the ALICE detector. The shape of the correlation function is then parametrized once the flow components are suppressed. The collision centrality dependence of the near side peak of the correlation function, most particularly its longitudinal width, provides information about the shear viscosity of the produced medium. Suggested theoretical interpretations are then mapped against the obtained data.
| Content type | Experiment |
|---|---|
| Collaboration | ALICE |
| Centralised submission by Collaboration | Presenter name already specified |
