22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

Refining Geometrical Scaling

22 Jul 2010, 15:25
16m
Salle 253 ()

Salle 253

Parallel Session Talk 08 - Heavy Ion Collisions and Soft Physics at Hadron Colliders 08 - Heavy Ion Collisions and Soft Physics at Hadron Colliders

Speaker

Robi Peschanski (IPhT, CEA-Saclay)

Description

We consider and compare various geometric-scaling solutions of the QCD Balitsky-Kovchegov (BK) equation, for fixed or running QCD coupling. These solutions predict different scaling variables which we first test with recent DIS cross-section data using the "Quality Factor" method. Then we use a chi^2 method to compare the different predicted parametrisations of the traveling wave representation of the BK equation's solutions. A geometric scaling corresponding to running coupling is finally favored, with a satisfactory chi^2 by d.o.f.. There is no indication of a sizeable scaling violation term.

Primary author

Robi Peschanski (IPhT, CEA-Saclay)

Co-author

christophe Royon (IRFU, CEA-Saxclay)

Presentation Materials