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SUMMARY:Proton tomography from lattice QCD via short-distance factorisatio
 n
DTSTART:20260529T150000Z
DTEND:20260529T170000Z
DTSTAMP:20260604T110900Z
UID:indico-event-33005@indico.bnl.gov
DESCRIPTION:Speakers: Christopher Monahan\n\nAbstract:\nPredicting the thr
 ee-dimensional structure of hadrons directly from quantum chromodynamics (
 QCD) has long seemed an impossible task. However\, the lattice community h
 as made significant progress towards this goal over the last few years\, a
 lthough much work remains. In this talk\, I discuss the HadStruc Collabora
 tion's recent three-dimensional reconstruction of the unpolarized isovecto
 r proton generalized parton distributions (GPDs) via the pseudo-distributi
 on framework. I will review our extraction of GPDs from double distributio
 ns using Gaussian process regression\, based on lattice data with 186 pair
 s of initial and final state momenta on a single lattice ensemble with pio
 n mass 358 MeV and lattice spacing 0.09 fm. I present our final results fo
 r the generalised form factors as well as the GPDs themselves and comment 
 on some of the sources of systematic uncertainty in our calculation.\n\nht
 tps://indico.bnl.gov/event/33005/
LOCATION:CFNS Library (https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdz
 Zzb29zQnZRVGp3VTBDQT09)
URL:https://indico.bnl.gov/event/33005/
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