Anisotropic flow and related phenomena in Pb-Pb collisions at with ALICE

Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions 2016

Margutti, Jacopo^1,2

Nikhef, Science Park 105, Amsterdam

1098 XG, Netherlands^1

Utrech University, Domplein 29, Utrecht

3512 JE, Netherlands^2

关键词: Anisotropic flows;    Azimuthal anisotropy;    Equation of state;    High energy densities;    Particle production;    Pb-Pb collisions;    Quark-gluon plasma;    Transport parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/832/1/012049/pdf
DOI  :  10.1088/1742-6596/832/1/012049

来源: IOP

【 摘 要 】

The ALICE experiment is designed and optimised to study the properties of the Quark-Gluon Plasma (QGP), a new state of matter, which is expected to be created at the high energy densities reached at the LHC. One of the key observables used to characterise the transport properties and the equation of state of the QGP is the azimuthal anisotropy in particle production, which is usually called anisotropic ow. In this presentation, we report the first measurements of anisotropic ow in Pb{Pb collisions at √sNN = 5:02 TeV, the highest energy ever achieved in heavy{ion collisions, and compare them with both theoretical predictions and experimental measurements at lower energies. This provides a unique opportunity to test the validity of the hydrodynamic paradigm at new energies and to further constrain key transport parameters of the QGP, such as the shear viscosity over entropy ratio.