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Beam Asymmetry of the eta and eta' mesons in the GlueX Experiment

Fri., Nov. 30, 2018 4:00 p.m. - Fri., Nov. 30, 2018 4:30 p.m.

Location: CL 232

The eta(548) and eta'(958) mesons are two of the richest unflavoured light mesons readily available at GlueX energies for studying resonances.  Many other light mesons have decay channels involving the eta mesons with significant branching ratios, and pi eta / pi eta' resonances are among the top contenders for possibly-accessible exotic and hybrid resonances which GlueX aims to study.  As such, the ability to reconstruct pure eta / eta' samples and analyze their decays is of utmost importance for understanding future work on more complicated decay structures.  One of the first observables we can measure is the sigma beam asymmetry, which for the eta' has never been measured at beam energies above a few GeV.  In this talk, our current analysis results for the eta and eta' beam asymmetries will be presented.

Speaker: T. Beattie, Department of Physics, University of Regina