Forward particle production at STAR
ORAL
Abstract
STAR has enhanced its forward acceptance with a new calorimeter (Forward Meson Spectrometer (FMS), $2.5<\eta<4.0$, $0<\phi<2\pi$), first brought online during the 2008 transverse p+p and d+Au RHIC run. This has extended the kinematic reach of asymmetry measurements and enhanced the ability to analyze multi-cluster correlations within an event. Multi-cluster events in the FMS hold the promise of separating Collins and Sivers effects by summing over fragmentation products. As a step towards understanding such data, we have begun to analyze three-cluster events, with a focus on the spin 1 $\omega$ through its decay to a neutral pion and photon. I will discuss the data obtained in 2008 and progress made in the analysis.
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Authors
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Andrew Gordon
Brookhaven National Laboratory