منابع مشابه
Parton coalescence and spacetime
The influence of spacetime dynamics in hadronization via parton coalescence at RHIC is investigated using covariant parton transport theory. Key observables, the quark number scaling of elliptic flow and the enhancement of the p/π ratio, show strong dynamical effects and differ from earlier results based on the simple coalescence formulas.
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Recent data from Au + Au reactions at √ sNN = 130 and 200 GeV from RHIC show striking difference between baryons and mesons in the intermediate transverse momentum region 2 < p⊥ < 5 GeV. First, elliptic flow scales with constituent quark number[ 1, 2, 3, 4, 5]. The flow per constituent quark as a function of transverse momentum per constituent quark, v 2 (pT/n)/n (n = 2 for mesons, 3 for baryon...
متن کاملMeson and baryon elliptic flow at high pT from parton coalescence
The large and saturating differential elliptic flow v2(p⊥) observed in Au + Au reactions at RHIC so far could only be explained assuming an order of magnitude denser initial parton system than estimated from perturbative QCD. Hadronization via parton coalescence can resolve this “opacity puzzle” because it enhances hadron elliptic flow at large p⊥ relative to that of partons at the same transve...
متن کاملar X iv : n uc l - th / 0 40 30 35 v 1 1 3 M ar 2 00 4 Particle correlations at RHIC from parton coalescence dynamics – first results
A new dynamical approach that combines covariant parton transport theory with hadronization channels via parton coalescence and fragmentation is applied to Au+Au at RHIC. Basic consequences of the simple coalescence formulas, such as elliptic flow scaling and enhanced p/π ratio, turn out to be rather sensitive to the spacetime aspects of coalescence dynamics. PACS numbers: 12.38.Mh; 24.85.+p; 2...
متن کامل- th / 0 40 30 35 v 1 1 3 M ar 2 00 4 Particle correlations at RHIC from parton coalescence dynamics – first results
A new dynamical approach that combines covariant parton transport theory with hadronization channels via parton coalescence and fragmentation is applied to Au+Au at RHIC. Basic consequences of the simple coalescence formulas, such as elliptic flow scaling and enhanced p/π ratio, turn out to be rather sensitive to the spacetime aspects of coalescence dynamics. PACS numbers: 12.38.Mh; 24.85.+p; 2...
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ژورنال
عنوان ژورنال: Acta Physica Hungarica A) Heavy Ion Physics
سال: 2005
ISSN: 1219-7580,1588-2675
DOI: 10.1556/aph.22.2005.3-4.13