Azimuthal instabilities of the Gribov-Levin-Ryskin equation
| Autor: | Giorgio Torrieri, Guillermo Gambini |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Quantum chromodynamics Nuclear and High Energy Physics Nuclear Theory 010308 nuclear & particles physics Elliptic flow Hadron FOS: Physical sciences Parton 01 natural sciences Nuclear Theory (nucl-th) High Energy Physics - Phenomenology Distribution function High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences Nuclear fusion 010306 general physics Nuclear Experiment Scaling Phenomenology (particle physics) Mathematical physics |
| Popis: | We introduce the phenomenology of elliptic flow in nuclear collisions, and argue that its scaling across energies, rapidities and system sizes could be suggestive of a QCD-based rather than a hydrodynamical explanation. As a hypothesis for such an explanation, we show that the GLR equation develops unstable modes when the parton distribution function is generalized to depend on azimuthal angle. This generally means the structure function aquires an azimuthal dependence. We argue that this process is a plausible alternative explanation for the origin of elliptic flow, one that naturally respects the scaling experimentally observed. Accepted for publication, European Physical Journal A |
| Databáze: | OpenAIRE |
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