Abstract

We present the first measurement of the away-side hadron yield associated with high-pT direct photons in p+p collisions at GeV. Widths of electromagnetic showers measured by a shower maximum detector (SMD) in the STAR barrel electromagnetic calorimeter (BEMC) have been used to select events rich in direct photons in pp collisions at the RHIC top energy. The measured associated hadron yield opposite to the trigger agrees with Hijing calculations.

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