Séminaire spécialisé

vendredi 12 février 2010 à 11:20

Investigating Parton Energy Loss in the QCD Medium via the Reconstruction Heavy Quark Jets

Mark Heinz


Heavy flavor hadrons, i.e. those containing charm and beauty 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 beauty 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 month of Pb-Pb running at √s=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.