The performance of the jet identification and reconstruction in heavy ions collisions with CMS detector

O. Kodolova; I. Vardanyan; A. Nikitenko; A. Oulianov

doi:10.1140/epjc/s10052-007-0223-9

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2023 Impact factor 4.2

Particles and Fields

Eur. Phys. J. C (2007) 50: 117-123
https://doi.org/10.1140/epjc/s10052-007-0223-9

Specail Article - Scientific Note

The performance of the jet identification and reconstruction in heavy ions collisions with CMS detector

O. Kodolova¹^*, I. Vardanyan¹, A. Nikitenko² and A. Oulianov³

¹ Moscow State University, Moscow, Russia
² Imperial College, London, UK
³ Institute of Experimental and Theoretical Physics, Moscow, Russia

^* e-mail: Olga.Kodolova@cern.ch

Received: 20 July 2006
Revised: 17 November 2006
Published online: 9 February 2007

Abstract

A jet reconstruction algorithm is developed for events with a high particle density in the calorimetric system. The performance of the reconstruction of hard QCD jets with initial parton energies 50–300 GeV is studied in central Pb–Pb collisions with a modified cone jet finder which includes an algorithm for event-by-event background subtraction. The heavy ion background is simulated using the HIJING Monte Carlo generator with $\text{d} N_{\text{ch}}/\text{d} y\vert_{y=0} = 5000$ . Results on the achieved jet reconstruction efficiency, purity, energy and spatial resolution are presented.