Heavy flavor measurements using high-pt electrons in the ALICE EMCal

TL;DR

This paper discusses high-pt electron identification in the ALICE EMCal to study heavy flavor production, energy loss in the Quark-Gluon Plasma, and B-jet tagging techniques at the LHC.

Contribution

It introduces methods for electron reconstruction and B-jet tagging in high-energy collisions, enhancing heavy flavor measurements at the LHC.

Findings

Electron identification achievable with 1 year of Pb-Pb data

Estimated non-photonic electron rates and errors

Preliminary B-jet tagging results using jet-finding algorithms

Abstract

Heavy flavor hadrons, i.e. those containing charm and bottom quarks, will be abundantly produced at the LHC and are important probes of the Quark-Gluon Plasma (QGP). Of particular interest is the investigation of parton energy loss in the medium. Using heavy flavor jets we will have a pure sample of quark jets with which to study the color-charge effects on energy loss. In addition, studies of bottom production in p+p collision at LHC energies will be utilized to further constrain the current parameters used by NLO and FONLL calculations. The talk will focus on the very high-pt electron particle identification using the EMCal detector. We present the electron reconstruction and measurements which can be achieved with 1 nominal year of Pb-Pb running at 5.5 TeV. We then estimate the rate of non-photonic electrons and present systematic and statistical error bars. Finally, we show preliminary results on B-jet tagging techniques in p+p which utilize jet-finding algorithms (FASTJET) in conjunction with displaced secondary vertices containing high-pt electrons.