[Theory-seminars] Theory Seminar Today

[Joseph Karpie]

Hey everyone,

Please join us in F224-225 today at 1pm for a theory seminar by Simonetta Liuti. She was willing to drive down for the day, so please do join us in person or over zoom.
https://jlab-org.zoomgov.com/j/1607158391?pwd=aLEOdeiEBH3EzueMEK4ce00r5yGDem.1

Title:  "A pathway to nucleon imaging through UPCs"

Abstract: Mapping the 3D structure of the proton in terms of its spinning quark and gluon constituents is one of the main goals of current hadronic physics investigations. Generalized parton distributions can provide part of the solution by rendering through Fourier transformation,  the spatial density of quarks and gluons with a given longitudinal momentum fraction, x.  We argue that a fuller dynamical picture of the proton's interior can be captured by introducing two-body spatial density distributions.
Two-body densities depend on two spatial variables describing the relative particle motion and the center-of-momentum motion.  They can provide therefore, additional information on the correlations in the particles' motion.
We show that two-particle densities can be defined in QCD through double generalized parton distributions
and we discuss their observability in ultra peripheral collisions


Thanks,
Adam, Joe and Pia

--
Joe Karpie
Pronouns: He/His/Him
Postdoctoral Fellow
Theoretical and Computational Physics Center
Jefferson Lab

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