PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Lattice-QCD Calculations of TMD Soft Function Through Large-Momentum Effective Theory
Q.A. Zhang*, J. Hua, Y. Huo, X. Ji, Y. Liu, Y.S. Liu, M. Schlemmer, A. Schäfer, P. Sun, W. Wang and Y.B. Yang
Full text: pdf
Pre-published on: May 16, 2022
Published on:
Abstract
The transverse-momentum-dependent (TMD) soft function is a key ingredient in QCD factorization of
Drell-Yan and other processes with relatively small transverse momentum.
We present a lattice QCD study of this function at moderately large rapidity
on a 2+1 flavor CLS dynamic ensemble with $a=0.098$ fm. We extract the rapidity-independent (or intrinsic) part of the
soft function through a large-momentum-transfer pseudo-scalar
meson form factor and its quasi-TMD wave function using leading-order factorization
in large-momentum effective theory.

We also investigate the rapidity-dependent part of the soft function---the Collins-Soper evolution kernel---based on the large-momentum evolution of the quasi-TMD wave function.
DOI: https://doi.org/10.22323/1.396.0477
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.