Can I read Collins-Soper kernel from lattice QCD at the physical pion mass on EtoBox?

Collins-Soper kernel from lattice QCD at the physical pion mass by Avkhadiev, Artur; Shanahan, Phiala; Wagman, Michael; Zhao, Yong is a scholarly article available to read on EtoBox.

What is Collins-Soper kernel from lattice QCD at the physical pion mass about?

This work presents a determination of the quark Collins-Soper kernel, which relates transverse-momentum-dependent parton distributions (TMDs) at different rapidity scales, using lattice Quantum Chromodynamics (QCD). This is the first lattice QCD calculation of the kernel at quark masses corresponding to a close-to-physical value of the pion mass, with next-to-next-leading logarithmic matching to TMDs from the corresponding lattice-calculable distributions, and includes a complete analysis of systematic uncertainties arising from operator mixing. The kernel is extracted at transverse momentum scales $240\,\text{MeV}\lesssim q_{T}\lesssim 1.6\,\text{GeV}$ with a precision sufficient to begin to discriminate between different phenomenological models in the non-perturbative region.

Author

Avkhadiev, Artur; Shanahan, Phiala; Wagman, Michael; Zhao, Yong

Published

2023

Language

EN