# Initial Stages 2021

Jan 10 – 15, 2021
Weizmann Institute of Science
Asia/Jerusalem timezone
See you at IS2023 in Copenhagen in June 2023

## Study of nuclei deformation effect on fluctuations and correlations to geometry response mapping with AMPT

Jan 12, 2021, 7:40 PM
1h 30m
Patio (vDLCC)

### Patio

#### vDLCC

bullet talk (poster) The initial stages of heavy-ion collisions

### Speaker

Dr Chunjian Zhang (stony brook university)

### Description

Preliminary STAR-BNL data shows Pearson coefficient ($\rho\left(v_{n}\{2\}^{2},\left[p_{\mathrm{T}}\right]\right)$) could be an intriguing observable to probe the shape deformation in atomic nuclei. Using a well-built and popular multi-phase transport calculation (AMPT), millions of collision events are produced from initial stages to final hadrons comparing with limited statistics from hydrodynamics. The flow fluctuations, event-by-event mean $p_T$ ($\left \langle p_T \right \rangle$) fluctuations and Pearson correlations ($\rho\left(v_{n}\{2\}^{2},\left[p_{\mathrm{T}}\right]\right)$) between mean $p_T$ and anisotropy flow are performed mapping from final particles to initial geometry in Au+Au at $\sqrt{s_{NN}}=200$ GeV and U+U at $\sqrt{s_{NN}}=193$ GeV collisions. These observables can serve as direct probes of the deformation in the colliding nuclear species in our transport AMPT model. An instructive description of hadronic evolution is also achieved, and such kind of study can be helpful to compare with STAR data to further constrain the deformation value, medium properties as well as final state effects in these collisions.

### Primary author

Dr Chunjian Zhang (stony brook university)

### Co-authors

Prof. Jiangyong Jia (Stony Brook University/BNL) Shengli Huang (Stony Brook University)