Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP08(2021)004
Keywords
Lattice QCD; Resummation
Categories
Funding
- PRACE
- DFG [SFB/TRR-55]
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-FG02-96ER40965]
- TMD Topical Collaboration
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This study presents lattice results for the non-perturbative Collins-Soper (CS) kernel, which describes the energy-dependence of transverse momentum-dependent parton distributions (TMDs). The CS kernel was extracted from ratios of first Mellin moments of quasi-TMDs evaluated at different nucleon momenta using dynamical N-f = 2 + 1 clover fermions for the CLS ensemble H101. The computed CS kernel shows good agreement with experimental extractions and previous lattice studies.
We present lattice results for the non-perturbative Collins-Soper (CS) kernel, which describes the energy-dependence of transverse momentum-dependent parton distributions (TMDs). The CS kernel is extracted from the ratios of first Mellin moments of quasi-TMDs evaluated at different nucleon momenta. The analysis is done with dynamical N-f = 2 + 1 clover fermions for the CLS ensemble H101 (a = 0.0854 fm, m(pi) = m(K) = 422 MeV). The computed CS kernel is in good agreement with experimental extractions and previous lattice studies.
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