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Abstract:

We apply divergence-type theory (DTT) dissipative hydrodynamics to study the 2+1 space-time evolution of the fireball created in Au+Au relativistic heavy-ion collisions at √sNN=200 GeV. DTTs are exact hydrodynamic theories that do not rely on velocity gradient expansions and therefore go beyond second-order theories. We numerically solve the equations of motion of the DTT for Glauber initial conditions and compare the results with those of second-order theory based on conformal invariance (Baier-Romatschke- Son-Starinets model) and with data. We find that the charged-hadron minimum-bias elliptic flow reaches its maximum value at lower pT in the DTT, and that the DTT allows for a value of η/s slightly larger than that of the BRSS. Our results show that the differences between viscous hydrodynamic formalisms are a significant source of uncertainty in the precise extraction of η/s from experiments. © 2010 The American Physical Society.

Registro:

Documento: Artículo
Título:Divergence-type 2+1 dissipative hydrodynamics applied to heavy-ion collisions
Autor:Peralta-Ramos, J.; Calzetta, E.
Filiación:Departamento de Física, FCEyN, Pabellón I, 1428 Buenos Aires, Argentina
Año:2010
Volumen:82
Número:5
DOI: http://dx.doi.org/10.1103/PhysRevC.82.054905
Título revista:Physical Review C - Nuclear Physics
Título revista abreviado:Phys. Rev. C Nucl. Phys.
ISSN:05562813
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v82_n5_p_PeraltaRamos

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Citas:

---------- APA ----------
Peralta-Ramos, J. & Calzetta, E. (2010) . Divergence-type 2+1 dissipative hydrodynamics applied to heavy-ion collisions. Physical Review C - Nuclear Physics, 82(5).
http://dx.doi.org/10.1103/PhysRevC.82.054905
---------- CHICAGO ----------
Peralta-Ramos, J., Calzetta, E. "Divergence-type 2+1 dissipative hydrodynamics applied to heavy-ion collisions" . Physical Review C - Nuclear Physics 82, no. 5 (2010).
http://dx.doi.org/10.1103/PhysRevC.82.054905
---------- MLA ----------
Peralta-Ramos, J., Calzetta, E. "Divergence-type 2+1 dissipative hydrodynamics applied to heavy-ion collisions" . Physical Review C - Nuclear Physics, vol. 82, no. 5, 2010.
http://dx.doi.org/10.1103/PhysRevC.82.054905
---------- VANCOUVER ----------
Peralta-Ramos, J., Calzetta, E. Divergence-type 2+1 dissipative hydrodynamics applied to heavy-ion collisions. Phys. Rev. C Nucl. Phys. 2010;82(5).
http://dx.doi.org/10.1103/PhysRevC.82.054905