https://doi.org/10.1140/epja/i2017-12205-x
Regular Article - Theoretical Physics
Azimuthal instabilities of the Gribov-Levin-Ryskin equation
IFGW, State University of Campinas, Campinas, Brazil
* e-mail: torrieri@ifi.unicamp.br
Received:
11
September
2016
Accepted:
11
January
2017
Published online:
30
January
2017
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 that the structure function acquires 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.
© SIF, Springer-Verlag Berlin Heidelberg, 2017
