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Nuclear Physics Seminar- Giovanni Chirilli- High-Energy Behavior of Quark Non-Local Operators: Implications for Lattice Calculations and Resummation Dynamics

Outside of PRB with students passing. Bright blue sky, sunny day.
November 3, 2023
4:00 pm - 5:00 pm
2128 Physics Research Building

Dr. Giovanni Chirilli

University of Regensburg, Germany

High-Energy Behavior of Quark Non-Local Operators: Implications for Lattice Calculations and Resummation Dynamics

Location: 2128 Physics Research Building

Faculty Host: Yuri Kovchegov

 

Abstract: Pseudo and quasi-PDFs are key tools that allow us to compute parton distribution functions (PDFs) directly on the lattice, giving us a deeper look into the inner structure of hadrons. However, using the lattice to make these calculations has its challenges. To get the Bjorken-x dependence from the bi-local operator, one needs to know the behavior of these operators for large values of the Ioffe-time parameter. Lattice calculation, on the other hand, can provide values only for finite values of this parameter.

I will describe the method to obtain such behavior by resumming the necessary logarithms, thereby providing a way to enhance the accuracy and reliability of lattice-derived PDFs.'