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Azimuth Quadrupole Systematics in Au-Au Collisions

Kettler, David

Journal of physics. Conference series, 2011-01, Vol.270 (1), p.012058-4 [Periódico revisado por pares]

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Título:
Azimuth Quadrupole Systematics in Au-Au Collisions
Autor: Kettler, David
Assuntos: Azimuth ; Collisions ; Correlation analysis ; Gold ; Mathematical models ; Parameterization ; Physics ; Platinum ; Quadrupoles ; Spectra
É parte de: Journal of physics. Conference series, 2011-01, Vol.270 (1), p.012058-4
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: We have measured pt-dependent two-particle number correlations on azimuth and pseudorapidity for eleven centralities of 62 and 200 GeV Au-Au collisions at STAR. 2D fits to these angular correlations isolate the azimuth quadrupole amplitude, denoted 2v22{2D}(pt), from localized same-side correlations. Event-plane V2(pt) measurements within the STAR TPC acceptance can be expressed as a sum of the azimuth quadrupole and the quadrupole component of the same-side peak. V2{2D}(pt) can be transformed to reveal quadrupole pt spectra which are approximately described by a fixed transverse boost and universal Levy form nearly independent of centrality. A parametrization of V2{2D}(pt) can be factored into centrality and pt-dependent pieces with a simple pt dependence above 0.75 GeV/c. Results from STAR are compared to published data and model predictions.
Editor: Bristol: IOP Publishing
Idioma: Inglês

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