Physics PAN Seminar by Prof. Piotr Bożek (AGH University, Krakow, Poland)
This event is in the past.
Physics PAN Seminar by Prof. Piotr Bożek (AGH University, Krakow, Poland)
Title: Mapping flow fluctuations in heavy-ion collisions
Abstract: Collective flow in heavy-ion collision undergoes event by event
fluctuations. The azimuthally asymmetric flow generated in each event
fluctuates in its magnitude and direction for each harmonic.
Another aspect of the flow fluctuations manifests itself in
the decorrelation of flow vectors measured in two different kinematic bins.
The decorrelation of the flow can be measured as the flow factorization
breaking coefficient at two different rapidities or at two different
transverse momenta. We discuss possible mechanisms leading to such
effects. The flow vector decorrelation can be due to flow magnitude of
or flow angle decorrelation. The two effects can be separated by measuring
the factorization breaking for higher moments of harmonic flow coefficients.
We briefly discuss how the two contributions are related in a simple model.
The separation of flow magnitude and flow angle decorrelation can be also
studied for the nonlinear flow coupling between flow harmonics of different
order.
Meeting Recording:
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