2026-06-29T09:24:54Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/1025652024-05-31T14:37:48Zcom_20.500.14352_14col_20.500.14352_15
Universality of the Collins-Soper kernel in lattice calculations
Shu, Hai-Tao
Schlemmer, Maximilian
Sizmann, Tobias
Vladimirov, Alexey
Walter, Lisa
Engelhardt, Michael
Schäfer, Andreas
Yang, Yi-Bo
539.1
Asymmetry
Partons
Gluons
Partículas
2207 Física Atómica y Nuclear
2023 Descuento SCOAP
The Collins-Soper (CS) kernel is a nonperturbative function that characterizes the rapidity evolution of transverse-momentum-dependent parton distribution functions (TMDPDFs) and wave functions. In this paper, we calculate the CS kernel for pion and proton targets and for quasi-TMDPDFs of leading and next-To-leading power. The calculations are carried out on the CLS ensemble H101 with dynamical Nf=2+1 clover-improved Wilson fermions. Our analyses demonstrate the consistency of different lattice extractions of the CS kernel for mesons and baryons, as well as for twist-Two and twist-Three operators, even though lattice artifacts could be significant. This consistency corroborates the universality of the lattice-determined CS kernel and suggests that a high-precision determination of it is in reach.
National Natural Science Foundation of China
Deutsche Forschungsgemeinschaft
Chinese Academy of Sciences
Comunidad de Madrid
Ministerio de Ciencia e Innovación (España)
United States Department of Energy
Depto. de Física Teórica
Fac. de Ciencias Físicas
Instituto de Física de Partículas y del Cosmos (IPARCOS)
TRUE
pub
Descuento UCM
2024-04-02T17:12:50Z
2024-04-02T17:12:50Z
2023-10-31
journal article
VoR
https://hdl.handle.net/20.500.14352/102565
2470-0010
10.1103/PhysRevD.108.074519
2470-0029
eng
12061131006
SCHA 458/22
XDB34030300
XDPB15
12293062
2020-T1/TIC-20204
info:eu-repo/grantAgreement/AEI//PID2019–106080GB-C21/ES/
DE-FG02-96ER40965
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
open access
application/pdf
American Physical Society