Eccentricity and elliptic flow in pp collisions at the LHC

Abstract

High-multiplicity proton-proton collisions at the LHC may exhibit collective phenomena such as elliptic flow. We study this issue using DIPSY, a brand-new Monte Carlo event generator which features almost-NLO BFKL dynamics and describes the transverse shape of the proton including all fluctuations. We predict the eccentricity of the collision as a function of the multiplicity and estimate the magnitude of elliptic flow. We suggest that flow can be signaled by a sign change in the four-particle azimuthal correlation.

4 pages, talk given at Quark Matter 2011. v2: added a new plot of the four-particle nonflow correlation in DIPSY vs. a rough parametrization of the preliminary ALICE data

References in corpus (7)

• Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC
• The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD
• Inclusive and Exclusive observables from dipoles in high energy collisions
• Eccentricity and elliptic flow in proton-proton collisions from parton evolution
• Azimuthal Asymmetry of pions in pp and pA collisions
• Charged particle elliptic flow in p+p collisions at LHC energies in a transport model PACIAE
• Collective flow in (anti)proton-proton collision at Tevatron and LHC

Cited by in corpus (6)

• Long-range angular correlations on the near and away side in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Long-range angular correlations of $\pi$, K and p in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Measurement with the ATLAS detector of multi-particle azimuthal correlations in p+Pb collisions at sqrt(s_NN)=5.02 TeV
• Measurement of multi-particle azimuthal correlations in $pp$, $p$+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector
• Observation of a "Ridge" correlation structure in high multiplicity proton-proton collisions: A brief review
• Charge-multiplicity and collision-energy dependence of $p_t$ spectra from $p$-$p$ collisions at the relativistic heavy-ion collider and large hadron collider