Speaker
Description
The η-Meson is a unique tool to study low energy QCD phenomena and to test the corre- sponding theoretical models and predictions.
The isospin violating decay η → π+π−π0 is driven by the strong force and allows a probe of the light quark masses, via measurement of the corresponding decay amplitude. This amplitude is accessible either via a Dalitz plot or partial wave analysis. The latter method allows for a direct calculation of the quark mass ratio Q, whereas the parameters from the Dalitz Plot analysis give insights into the decay dynamics and can be compared to theoretical calculations.
These η-decays have been produced and measured in the reaction γp → pη with the GlueX experiment, located at the Thomas Jefferson National Laboratory. GlueX finished its first phase of data taking in the latter part of 2018.
This talk will discuss the status and prospects of the η → π+π−π0 Dalitz Plot analysis using the GlueX Phase I data set, as well as the application of partial wave analysis.
