[Theory-seminars] Theory Seminar Monday (hybrid) - Michael Engelhardt

[Joseph Karpie]

Hey Everyone,

If you would like to meet with Micahel Engelhardt on Monday or Tuesday, please schedule on the attached list https://docs.google.com/spreadsheets/d/1gV3Rdaysuzc7d3NvDTEA7zYlHJOM1ti21PXMtmFMmFU/edit?usp=sharing.

See you Monday,
Caroline, Joe, and Zheng-Yang
________________________________
From: Theory-seminars <theory-seminars-bounces at jlab.org> on behalf of Zheng-Yang Li via Theory-seminars <theory-seminars at jlab.org>
Sent: Friday, November 17, 2023 8:34 AM
To: theory-seminars at jlab.org <theory-seminars at jlab.org>
Subject: [Theory-seminars] Theory Seminar Monday (hybrid) - Michael Engelhardt

Dear all,

On Monday, November 20th, 2023 at 1pm EST, we will have a hybrid seminar given by Michael Engelhardt of New Mexico State University in CC L102 and on the Zoom for Government link:

https://jlab-org.zoomgov.com/j/1617585208?pwd=aThnbHBCeitNNnFMUVowcWRJSHRXUT09

Please see below for the title and abstract.


Theory Seminar: Monday November 20th, 1pm EST (hybrid)


Speaker: Michael Engelhardt (New Mexico State University)


Title: Quark orbital angular momentum in the proton from Lattice QCD


Abstract: Several approaches to quantifying quark orbital angular momentum in the proton and associated characteristics such as spin-orbit correlations exist. They can be tied together at the level of Generalized Transverse Momentum-Dependent Parton Distributions (GTMDs). A journey of Lattice QCD calculations of these quantities through different avenues is presented.


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CNF Seminar

Monday November 20th, 2023 at 11am
Room: CC L102
Zoom link: https://jlab-org.zoomgov.com/j/1601213226?pwd=dUNRdHgvMm45bDZXWWM2Y2JYenlWQT0<https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1601213226-3Fpwd-3DdUNRdHgvMm45bDZXWWM2Y2JYenlWQT09&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=VqTuHdztI1WEJtaX9L67lw&m=S7pzww10omrUHYDlQLo09xVUuJeJKdo8tw5OW2fzo9o2a_IHZCw3XX1ZoRUu26N7&s=2HLt-fvihhgkKW9VguhscE7G00HO0ehZ2cW06KJg6as&e=>

Speaker: M. Gabriel (CNF)
Title: Generalized parton distributions through universal moment parameterization: the gluonic sector with deeply virtual J/ψ production

Abstract:

We present a further step toward a global extraction of gluon generalized parton distributions (GPDs). In our previous work we performed the first global analysis of quark GPDs by including lattice quantum chromodynamics (QCD) calculations, global fitted forward parton distribution functions (PDFs), form factors (FFs), and Deeply Virtual Compton Scattering (DVCS) measurements from JLab and Hadron-Electron Ring Accelerator (HERA) to constrain two quark flavors with leading order QCD evolution. There, the inclusion of DVCS did not probe gluon structure at leading order, as the gluon GPDs only enter through evolution. In this talk we discuss the inclusion of HERA measurements of Deeply Virtual Meson Production (DVMP) in order to study gluon GPDs at non-zero skewness using the same conformal moment parameterization ansatz. We concentrate our study on the production of J/ψ mesons in order to limit quark contributions and thus allow for greater constraints on the gluon GPDs at non-zero skewness.



See you on Monday.


Best regards,

Caroline, Joe, and Zheng-Yang

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