High-$p_T$ electron distributions in d+Au and p+p collisions at RHIC

Abstract

We present preliminary measurements of electron and positron spectra in d+Au and p+p collisions at $\sqrt{s_{NN}}=200$ GeV for $1.5<p_T<7.0$ GeV/c. These measurements were carried out using the STAR Time Projection Chamber (TPC) and the Barrel Electromagnetic calorimeter (EMC). Overall hadron rejection factors in the range of $10^5$ have been achieved. In this work we describe the measurement technique used to discriminate electrons from hadrons and compare the results for single electron spectra with Pythia based pQCD calculations for electrons from heavy-quark semi-leptonic decays.

Quark Matter 2004 conference proceedings

Cited by in corpus (4)

• Measurement of open charm production in $d$+Au collisions at $\sqrt{s_{NN}}$=200 GeV
• Highlights from STAR
• Heavy-Quark Diffusion, Flow and Recombination at RHIC
• Heavy-Quark Spectra at RHIC and Resonances in the QGP