2014/11/30 by V. P. Konchakovski, V P Konchakovski, W. Cassing +3 · 29 citations
Materials Science · Physics and Astronomy · #Dust and Plasma Wave Phenomena #Event (particle physics) #Flow (mathematics) #High-Energy Particle Collisions Research #Material Dynamics and Properties #Momentum (technical analysis) #Observable #Phase (matter) #Sensitivity (control systems) #Statistical fluctuations #Transverse plane #hep-ph #nucl-th
paper · pdf · doi:10.1088/0954-3899/42/5/055106
published in Journal of Physics G Nuclear and Particle Physics 42(5), 055106 (IOP Publishing) · 15 pages, 8 figures. arXiv admin note: text overlap with arXiv:1401.4409
openalex publication_date 2015/03/13 · arxiv created 2015/03/21 · arxiv updated 2015/03/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The Parton–Hadron–String-Dynamics transport model is used to study the influence of the initial size of spatial fluctuations of the interacting system on flow observables in Pb–Pb collisions at s N N = 2.76 TeV for different centralities. While the flow coefficients v 2 , v 3 , v 4 and v 5 are reasonably described in comparison to the data from the ALICE Collaboration for different centralities within the default setting, no essential sensitivity is found with respect to the initial size of spatial fluctuations even for very central collisions where the flow coefficients are dominated by the size of initial state fluctuations. We attribute this lack of sensitivity partly to the low interaction rate of the degrees-of-freedom in this very early phase of order ∼ 0.3 fm c −1 which is also in common with the weakly interacting color glass condensate or glasma approach. Moreover, since the event shape in the transverse plane is approximately the same for different size of spatial fluctuations very similar eccentricities ϵ n are transformed to roughly the same flow coefficients v n in momentum space.