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SUMMARY:[NT/RBRC seminar] Extraction of 3D hadron structure from experimen
 tal data and lattice QCD results
DTSTART:20260701T150000Z
DTEND:20260701T170000Z
DTSTAMP:20260716T174500Z
UID:indico-event-33357@indico.bnl.gov
DESCRIPTION:Speakers: Zaki Panjsheeri (University of Virginia)\n\nRealisti
 c and flexible parameterizations are a fundamental component of the extrac
 tion of generalized parton distributions from available data and future El
 ectron-Ion Collider experiments. In this seminar\, we present a spectator-
 model based parametrization for valence\, sea\, and gluon GPDs\, including
  off-forward perturbative QCD evolution. The parameters are constrained us
 ing inclusive scattering data\, lattice QCD results\, and symmetry conditi
 ons. This approach\, called UVA2\, serves as the foundation for extending 
 the imaging of proton structure beyond the usual one-body picture to that 
 of multi-parton correlations. To interface GPD phenomenology more closely 
 with the degrees of freedom of lattice QCD\, we introduce a modified versi
 on of our parameterization to interpret lattice connected and disconnected
  contributions\, which becomes especially relevant at low x. Additionally\
 , UVA2 is used in a closure test for NNGPD\, a flexible GPD parameterizati
 on within a Bayesian deep-learning framework. The challenges evident in th
 e interfacing of GPD extractions with the presently available deeply virtu
 al exclusive scattering data will be discussed.\n\nhttps://indico.bnl.gov/
 event/33357/
LOCATION:CFNS library (https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdz
 Zzb29zQnZRVGp3VTBDQT09)
URL:https://indico.bnl.gov/event/33357/
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