Speaker
Description
The George Washington University has been involved in experimental, theoretical, and phenomenological activities in the field of hadron spectroscopy for several decades; each of these activities complement the others. Experimental efforts have concentrated on the A2 experiment at Mainz, as well as the CLAS and GlueX experiments at Jefferson Lab. The interpretation of these new data has been greatly aided by the SAID Partial Wave Analysis ramework, which has been hosted at George Washington since 1998 when it was transitioned from Virginia Tech. This framework uses a coupled-channel analysis to fit parameterized Chew-Mandelstam K matrices to tens of thousands of data points in dozens of observables. The solutions have been used, in comparison with other partial-wave analyses to characterize the impact of new data. In this talk, I will give an overview of the most recent experimental results in pion photo-production from both the proton and neutron, including our recent measurement of the E asymmetry for 𝛾𝑝 → 𝜋0𝑝 measured in the FROST experiment, as well as our latest SAID solutions updated for these data. I will also give an outlook on upcoming results and new experimental activities.
