Journal
PHYSICAL REVIEW C
Volume 81, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.81.054902
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Funding
- Polish Ministry of Science and Higher Education [N202 034 32/0918, N N202 263438]
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We study the generation of the directed flow in the hydrodynamic expansion of hot matter formed in ultrarelativistic heavy-ion collisions at root s = 200 GeV. The experimentally observed negative-directed flow in a wide range of central pseudorapidities is reproduced, assuming that the fireball is tilted away from the collision axis. The tilt of the source is consistent with a preferential emission in the forward-backward hemisphere from forward-backward participating nucleons. The model reproduces the experimentally observed scaling of the directed flow when going from Au-Au to Cu-Cu systems.
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