Charged particle elliptic flow in p+p collisions at LHC energies in a transport model PACIAE

Abstract

The parton and hadron cascade model PACIAE based on PYTHIA was used to investigate the charged particle elliptic flow in minimum bias pp collisions at the LHC energies. The strings were distributed randomly in the transverse ellipsoid of the pp collision system with major axis of $R$ (proton radius) and minor axis of $R(1-\xi )$ before parton rescattering. The charged particle elliptic flow as a function of the random number $\xi$ and transverse momentum $p_T$ were investigated. The calculated $v_2/\epsilon$ as a function of reaction energy increases monotonously with increasing reaction energy up to $\sqrt{s}\sim$7 TeV and then turns to saturation. With the parton-parton cross section enlarges three times in parton rescattering, the rapidity integrated charged particle elliptic flow may reach 0.025 at $p_T\sim$2 GeV/c in the minimum bias pp collisions at $\sqrt{s}$=7 TeV.

7 pages, 4 figures

References in corpus (8)

• PYTHIA 6.4 Physics and Manual
• Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV
• Charged-particle multiplicity density at mid-rapidity in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Centrality dependence of charged hadron and strange hadron elliptic flow from sqrt(s_NN) = 200 GeV Au+Au collisions
• Relativistic hydrodynamics for heavy-ion collisions
• The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD
• Centrality bin size dependence of multiplicity correlation in central Au+Au collisions at $\sqrt{s_{N}N}$=200 GeV}
• PACIAE Model Predictions for Pb+Pb Collisions at LHC Compared to the Au+Au Collisions at RHIC

Cited by in corpus (6)

• PACIAE 2.0: An updated parton and hadron cascade model (program) for the relativistic nuclear collisions
• Elliptic and Triangular Flow and their Correlation in Ultrarelativistic High Multiplicity Proton Proton Collisions at 14 TeV
• PACIAE 2.1: An updated issue of the parton and hadron cascade model PACIAE 2.0
• Eccentricity and elliptic flow in pp collisions at the LHC
• Hadron formation from interaction among quarks
• Strange particles production in relativistic nucleus-nucleus collisions at RHIC and LHC energy regions