Estimation of Collision Impact Parameter

Abstract

We demonstrate that the nuclear collision geometry (i.e. impact parameter) can be determined with 1.5 fm accuracy in an event-by-event analysis by measuring the transverse energy flow in the pseudorapidity region $3\le |\eta |\le 5$ with a minimal dependence on collision dynamics details at the LHC energy scale. Using the HIJING model we have illustrated our calculation by a simulation of events of nucleus-nucleus interactions at the c.m.s energy from 1 up to 5.5 TeV per nucleon and various type of nuclei.

6 pages, 3 figures

References in corpus (6)

• Hadron production in nuclear collisions at RHIC and high density QCD
• Energy loss in perturbative QCD
• Scaling of transverse energies and multiplicities with atomic number and energy in ultrarelativistic nuclear collisions
• Energy and Centrality Dependence of Rapidity Densities at RHIC
• Production of transverse energy from minijets in next-to-leading order perturbative QCD
• Azimuthal asymmetry in transverse energy flow in nuclear collisions at high energies