[Theory-seminars] Theory Seminar Monday (hybrid) - Dimitra Pefkou

[Zheng-Yang Li]

Dear all,

On Monday, March 17th, 2025 at 1:00PM EDT, we will have a hybrid seminar given by Dimitra Pefkou of University of California, Berkeley, in person in CC L102 and on the following Zoom link:

https://jlab-org.zoomgov.com/j/1617685484?pwd=L57B0Lp70n1a0yRbkcdUeAiaBA8Y1q.1
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Please see below for the title and abstract.

Theory Seminar: March 17th, 1pm EDT (hybrid)

Speaker: Dimitra Pefkou (University of California, Berkeley)

Title: Moments of Parton Distribution Functions From Lattice QCD

Abstract: Parton distribution functions (PDFs) are crucial to the understanding of the internal structure of hadrons, and their precise determination is necessary for searches of “beyond the Standard Model” physics in collider experiments. Directly accessing PDFs in lattice QCD calculations is impossible due to the Euclidean space-time geometry. Mellin moments of PDFs are defined in terms of local operators that can be computed in lattice QCD but suffer from power divergent mixing beyond a certain order due to the reduced symmetry of the hypercubic lattice. Recently, a method was proposed to use gradient flow in order to circumvent this mixing and access moments of PDFs of any order. In this talk, I will discuss the implementation of this method and present preliminary results on moments of the unpolarized isovector PDF of the pion using four stabilized Wilson fermion ensembles generated by the OpenLat initiative.

See you on Monday.

Best regards,

Joe, Zheng-Yang, Gloria and Adam
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