[Theory-seminars] Theory Seminar Today - Giorgio Foti

[Gloria Montana-Faiget]

Hey all,

Today, at 1 pm, we will have a Cake Seminar by Giorgio Foti of the University of Messina in CC F326-327 and Zoom.

Attendance in person is highly encouraged. Please see below for the details.

Cake seminar: Wednesday, July 9th 2025, at 1pm EDT

Speaker: Giorgio Foti (University of Messina)

Room: F326-327

Zoom: https://jlab-org.zoomgov.com/j/1614097667?pwd=gvxFXrUWRwOmbrFOJiHlzyCYcXcrjE.1
Title: Understanding QCD spectrum from the S-matrix perspective

Abstract: S-matrix theory is one of the most powerful frameworks to study the unstable states that populate the QCD spectrum. In particular, it is very useful to extract physical properties of the "exotics" candidates—particles that cannot be described by the ordinary quark model—in a non-perturbative, phenomenological way. In this talk, I will introduce the so-called N/D formalism, which is a technique to impose the analytic properties of the amplitudes. I will show two applications of this formalism to the tetraquark candidate X(3872) and to the still-debated (exotic?) Upsilon states in the bottomonium spectrum.

Best,
Adam, Gloria, Joe, Pia

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