[Theory-seminars] Theory seminar: Monday May 17th at 1:00PM

[Christos Kallidonis]

Dear all,

Tomorrow we will have a theory seminar, please see below for details:

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Bluejeans connection: https://bluejeans.com/801786278
Date and time: Monday May 17th, 2021, 1:00PM
Speaker: Shohini Bhattacharya (Temple University)
Title: An exploratory study of twist-3 PDFs using quasi-PDF approach
Abstract: The quasi-PDF approach, proposed by Ji in 2013, has sparked a new wave of interest in extracting PDFs from lattice QCD. This approach relies on the extraction of matrix elements of fast-moving hadrons coupled to space-like separated quark fields. Such auxiliary quantities can be related to the light-cone PDFs using a perturbative procedure called matching. This procedure has demonstrated success in the extraction of the twist-2 PDFs as well as twist-2 GPDs from lattice QCD. We explore the formalism of matching, for the first time, for the twist-3 PDFs g_{T}(x), e(x) and h_{L}(x). We make several non-trivial observations, all of which arise from the singular zero-mode contributions present in the perturbative results of the light-cone and quasi-PDFs. As such, we lay the necessary theoretical foundations for dealing with such zero-mode contributions in matching-type calculations. Finally, we present the first-ever x-dependent twist-3 results.
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The recording archives of our seminars can be found here:
         https://www.jlab.org/theory/seminars/2021seminars


In order to easier identify the person speaking at a given time during the seminar, we would like to kindly ask each participant to enter their full name when logging on to the meeting.
Thanks, and see you all there!

Best regards,
Astrid, Christos, Filippo
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