Collective flow in small systems

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



Contributed Talk Collective Dynamics Collective dynamics


Piotr Bozek


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


Wojciech Broniowski (IFJ PAN)

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