Jets and decays of resonances: Two mechanisms responsible for reduction of elliptic flow at the CERN Large Hadron Collider (LHC) and restoration of constituent quark scaling

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.064907· OSTI ID:21296615

Eyyubova, G; Bravina, L V; Zabrodin, E; Korotkikh, V L; Lokhtin, I P; Malinina, L V; Petrushanko, S V; Snigirev, A M ^[1]

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1. Department of Physics, University of Oslo, Post Box 1048 Blindern, N-0316 Oslo (Norway)

The formation and evolution of the elliptic flow pattern in Pb+Pb collisions at {radical}(s)=5.5A TeV and in Au+Au collisions at {radical}(s)=200A GeV are analyzed for different hadron species within the framework of the HYDJET++ Monte Carlo model. The model contains both hydrodynamic state and jets, thus allowing for a study of the interplay between the soft and hard processes. It is found that jets terminate the rise of the elliptic flow with increasing transverse momentum. Since jets are more influential at the Large Hadron Collider (LHC) than at the Relativistic Heavy Ion Collider (RHIC), the elliptic flow at LHC should be weaker than that at RHIC. The influence of resonance decays on particle elliptic flow is also investigated. These final state interactions enhance the low-p{sub T} part of the v{sub 2} of pions and light baryons and work toward the fulfillment of idealized constituent quark scaling.

• OSTI ID: 21296615
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
BARYONS
BROOKHAVEN RHIC
CERN LHC
COLLISIONS
DECAY
FINAL-STATE INTERACTIONS
GEV RANGE 100-1000
GOLD
LEAD
MONTE CARLO METHOD
PIONS
QUARKS
RESONANCE
SCALING
SIMULATION
TEV RANGE 01-10
TRANSVERSE MOMENTUM