Collective flow in small systems

May 19, 2014, 11:40 AM
20m
europium (darmstadtium)

europium

darmstadtium

Contributed Talk Collective Dynamics Collective dynamics

Speaker

Piotr Bozek

Description

The collective expansion of the fireball formed in ultrarelativistic p-A and d-A collisions are discussed. Estimates based on the extrapolation of the hydrodynamic model from A-A collisions to small systems indicate possible formation of a dense droplet of matter. Fluctuation in the initial state lead to finite eccentricity and triangularity, which give measurable elliptic and triangular flow of the emitted particles. Further predictions consistent with experimental observations are the mass ordering of the average transverse momentum and of the elliptic flow for identified particles. We discuss the prediction of the model for collisions of a deformed projectile as in d-A collisions. This deformation leads to a large elliptic flow.

Primary author

Piotr Bozek

Co-author

Wojciech Broniowski (IFJ PAN)

Presentation materials