# 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

May 31, 2020 to June 5, 2020
Online
US/Central timezone

## Exploration of the properties of the medium produced in large and small collision-systems with azimuthal anisotropy scaling functions

Not scheduled
1h 20m
Online

#### Online

Poster Jets and High Momentum Hadrons

### Speaker

Roy Lacey (Stony Brook University)

### Description

Azimuthal anisotropy scaling functions can provide crucial constraints for the properties of the medium produced in ion-ion collisions, because they leverage the characteristic scaling patterns for viscous-flow and jet quenching, to simultaneously delineate the respective role of initial-state eccentricity $\varepsilon_n$, dimensionless size $RT \propto \left< N_{\rm chg}\right>^{1/3}$, the viscous correction to the thermal distribution function $\delta_{f}$, the specific shear $\eta/s(T, \mu_{B})$, and bulk $\zeta/s(T, \mu_{B})$ viscosities, stopping power of the medium $\hat{q}((T, \mu_{B}))$ ... The anisotropy scaling functions indicate data collapse on to a single curve for fully constrained scaling coefficients, which in turn, provide constraints for the transport coefficients and the eccentricity spectrum. I will present and discuss anisotropy scaling functions for charged hadrons and identified particle species, obtained from a broad array of collision-system sizes, shapes, and asymmetries for $\sqrt{s_{NN}}$ values spanning RHIC and LHC energies. The scaling coefficients, which provide new and compelling constraints for the transport coefficients will be presented and discussed.

Contribution type Contributed Talk Jets and High Momentum Hadrons

### Primary author

Roy Lacey (Stony Brook University)

### Presentation materials

There are no materials yet.