Directed and elliptic flow in Pb + Pb collisions at 40-A-GeV and 158-A-GeV

Collaboration
Dec, 2002

Citations per year

200220072012201720222140
Abstract:
Directed and elliptic flow are reported for charged pions and protons as a function of transverse momentum, rapidity, and centrality in 40 and 158 AGeV Pb + Pb collisions. The standard method of correlating particles with an event plane is used. The directed flow of protons is small and shows little variation near to midrapidity, but rises fast towards projectile rapidity in the 40 AGeV data. For most peripheral collisions the flat region becomes negative resulting in v1v_1 changing sign three times. Elliptic flow doesn't seem to change very much from 40 AGeV to 158 AGeV. The difference is smaller than anticipated from the overall energy dependence from AGS to RHIC.
Note:
  • Presented at 16th International Conference on Ultrarelativistic Nucleus-Nucelus Collisions, Quark Matter 2002 (QM 2002), Nantes, France, 18-24 Jul 2002, 4 pages, 3 figures
  • talk: Nantes 2002/07/18
  • nucleus nucleus: colliding beams
  • scattering: heavy ion
  • pi: hadroproduction
  • p: hadroproduction
  • particle flow: elliptic flow
  • transverse momentum dependence
  • rapidity dependence
  • impact parameter: dependence
  • energy dependence