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14-18 May 2018
Jefferson Lab - CEBAF Center
US/Eastern timezone

Evaluation of Parton Distribution Functions and Generalized Parton Distributions from their Moments and Ioffe Time Behavior

15 May 2018, 16:10
20m
Auditorium (Jefferson Lab - CEBAF Center)

Auditorium

Jefferson Lab - CEBAF Center

Speaker

Prof. simonetta liuti (university of virginia)

Description

Electromagnetic interactions probe the Fourier transform of the quark-quark correlation function measuring the light cone distance traveled by the struck quark during the interaction, also known as Ioffe time. The small distance behavior of the correlation function can be determined by the first few moments calculated on the lattice while its large distance behavior, exceeding the proton size, is regulated by Regge type terms. I will show how this characteristic dependence of the correlation function can be used to extract the Bjorken x dependence of the u and d quark generalized parton distributions in the proton. I will also present a study of QCD evolution in the transverse space coordinate for the recently introduced pseudo-pdfs using a phenomenological model.

Presentation Materials