[Theory-seminars] Cake seminar tomorrow: NEW BLUEJEANS LINK

[Patrick Barry]

Dear All,

This is a reminder of the cake seminar tomorrow, Monday September 13th at 1:00pm.  Sebastian Dawid (Indiana University) will be giving a cake seminar about his graduate research. For the chess lovers among us: you might like to know that he has also promised a chess exercise! See below for details about the talk.

Note that we have changed the BlueJeans link for theory and cake seminars. >From now on, we will be gathering on:
https://jlab.bluejeans.com/319089525/6769.

Cake seminar
Monday September 13th, 1:00 PM

Sebastian Dawid (Indiana University) will speak about "Three-body scattering in the presence of bound states".

Abstract:
Strong interactions produce a rich spectrum of resonances which decay into three or more hadrons. Understanding their phenomenology requires a developed theoretical framework to extract parameters from experimental data and lattice QCD simulations of hadron scattering. Two classes of relativistic three-body approaches are currently being pursued: the EFT-based and unitarity-based one. In the talk, I will describe certain features of both formalism by considering a model of relativistic three-body scattering with an S-wave bound state in the two-body sub-channel. I will present and discuss numerical solutions for the amplitudes obtained from integral equations of the EFT-based approach. Next, I will show a simple generalization of the unitarity-based framework which includes all relevant open channels, and discuss the nonphysical singularities near the physical region. An appropriate chess problem will be given to the audience as an exercise.

We look forward to seeing you tomorrow!
Astrid, Colin, and Patrick

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