Affiliation:
1. Massachusetts Institute of Technology
2. Fermi National Accelerator Laboratory
3. Argonne National Laboratory
Abstract
This Letter 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 such determination with systematic control of quark mass, operator mixing, and discretization effects. Next-to-next-to-leading logarithmic matching is used to match lattice-calculable distributions to the corresponding TMDs. The continuum-extrapolated lattice QCD results are consistent with several recent phenomenological parametrizations of the Collins-Soper kernel and are precise enough to disfavor other parametrizations.
Published by the American Physical Society
2024
Funder
U.S. Department of Energy
Simons Foundation
Argonne National Laboratory
Office of Science
High Energy Physics
National Energy Research Scientific Computing Center
National Science Foundation
Fermi Research Alliance, LLC
Extreme Science and Engineering Discovery Environment
Pittsburgh Supercomputing Center
MIT SuperCloud
Lincoln Laboratory Supercomputing Center
Publisher
American Physical Society (APS)
Cited by
1 articles.
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