[Theory-seminars] Theory Seminar Tomorrow - Marston Copeland

[Caroline Silva Rocha Costa]

Dear all,

Tomorrow, at 1pm EDT, we will have a hybrid seminar given by Marston Copeland of Duke University in CC L102 and on the Zoom for Government link:

https://jlab-org.zoomgov.com/j/1613091341?pwd=WW93Qk9VaHNqTkhraG1jaDZ4SUxFdz09

Please see below for the title and abstract.


Theory Seminar: May 13th, 1pm EDT (hybrid)


Speaker: Marston Copeland (Duke University)


Title: Transverse Momentum Dependent PDFs in Chiral Effective Theory


Abstract: I present a theoretical framework to match transverse momentum dependent parton distribution functions (TMD PDFs) onto chiral perturbation theory operators. In this framework, the TMD PDF is expressed as a convolution of TMD hadronic splitting functions, which describe fluctuations into intermediate hadrons in chiral perturbation theory, and short distance matching coefficients, which are the TMD PDFs of intermediate hadrons in the chiral limit. I explore the various limits of the matching condition and apply an operator product expansion to the high energy matching coefficients, allowing them to be written in terms of the collinear valence PDFs of intermediate hadrons. As an example, I calculate the isovector TMD hadronic splitting functions for the nucleon at leading order in the chiral expansion. Finally, I present numerical results and discuss phenomenological implications.


See you tomorrow.


Best regards,

Caroline, Joe, and Zheng-Yang
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