Speaker
Piotr Bozek
(AGH University of Science and Technology)
Description
We investigate the torque effect (decorrelation of event planes in rapidity) [1,2] and find
that the recent CMS results for p+Pb and Pb+Pb collisions suggest specific fluctuations of the initially
deposited entropy. In our model, the extent in rapidity of the initial sources is randomly distributed over
the available range. These fluctuations increase the event-plane decorrelation: for Pb+Pb they bring the
results closer to the data, while for p+Pb collisions they are essential to generate sizable decorrelation.
We also make predictions of the torque effect for the collisions of Au+Au and Cu+Au at RHIC energies,
which may be used as baseline for future experiments.
[1] The torque effect and fluctuations of entropy deposition in rapidity in ultra-relativistic nuclear collisions.
Piotr Bozek, Wojciech Broniowski [arXiv:1506.02817 [nucl-th]]
[2] Hydrodynamic modeling of pseudorapidity flow correlations in relativistic heavy-ion collisions and the torque effect.
Piotr Bożek, Wojciech Broniowski, Adam Olszewski, Phys. Rev. C91 (2015) 054912
| On behalf of collaboration: | NONE |
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Primary authors
Piotr Bozek
(AGH University of Science and Technology)
Wojciech Broniowski
(IFJ PAN)
