Charged-particle pseudorapidity density and anisotropic flow over a wide pseudorapidity range using ALICE at the LHC

Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus–Nucleus Collisions 2012

Gulbrandsen, K.^1

Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark^1

关键词: Anisotropic flows;    Collective effects;    Global variables;    Heavy ion collision;    Longitudinal expansions;    Particle production;    Pseudorapidities;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/446/1/012027/pdf
DOI  :  10.1088/1742-6596/446/1/012027

来源: IOP

【 摘 要 】

The pseudorapidity density and anisotropic flow of charged-particles provide fundamental information about global variables and correlations in heavy-ion collisions. The pseudorapidity density is related to the energy available for particle production while the anisotropic flow is related to collective effects from interactions between these particles. Extending these measurements to very forward pseudorapidities yields information about the longitudinal expansion of the system. The first measurements performed at the LHC over more than 8 units of pseudorapidity are presented. The longitudinal scaling of the measurements is analyzed and comparison to models is performed.