Identified particle spectra and anisotropic flow in an event-by-event hybrid approach in Pb + Pb collisions at {radical}(s{sub NN})=2.76 TeV

Journal Article · Thu Sep 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.034912· OSTI ID:21596781

Petersen, Hannah ^[1]

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1. Department of Physics, Duke University, Durham, North Carolina 27708-0305 (United States)

The first results from heavy ion collisions at the Large Hadron Collider for charged-particle spectra and elliptic flow are compared to an event-by-event hybrid approach with an ideal hydrodynamic expansion. This approach has been shown to successfully describe bulk observables at the BNL Relativistic Heavy Ion Collider. Without changing any parameters of the calculation, the same approach is applied to Pb + Pb collisions at {radical}(s{sub NN})=2.76 TeV. This is an important test if the established understanding of the dynamics of relativistic heavy ion collisions is also applicable at even higher energies. Specifically, we employ the hybrid approach with two different equations of state and the pure hadronic transport approach to indicate sensitivities to finite viscosity. The centrality dependence of the charged hadron multiplicity, p{sub T} spectra, and differential elliptic flow are shown to be in reasonable agreement with the ALICE Collaboration data. Furthermore, we make predictions for the transverse mass spectra of identified particles and triangular flow. The eccentricities and their fluctuations are found to be surprisingly similar to the ones at lower energies, and therefore, the triangular flow results are very similar. Any deviations from these predictions will indicate the need for different physics mechanisms responsible for the dynamics of heavy ion collisions.

• OSTI ID: 21596781
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 84; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
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ANISOTROPY
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BNL
BROOKHAVEN RHIC
CERN LHC
CHARGED PARTICLES
COLLISIONS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
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HADRONS
HEAVY ION ACCELERATORS
HEAVY ION REACTIONS
LEAD
LINEAR MOMENTUM
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MASS SPECTRA
METALS
MULTIPLICITY
NATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
OPEN PLASMA DEVICES
RELATIVISTIC RANGE
SENSITIVITY
SPECTRA
STORAGE RINGS
SYNCHROTRONS
TEV RANGE
TEV RANGE 01-10
THERMONUCLEAR DEVICES
TRANSVERSE MOMENTUM
US AEC
US DOE
US ERDA
US ORGANIZATIONS
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