Determination of the Collins-Soper Kernel from Lattice QCD
Journal Article
·
· Journal of High Energy Physics (Online)
- Univ. of Regensburg (Germany). Inst. for Theoretical Physics; New Mexico State Univ., Las Cruces, NM (United States)
- Univ. of Regensburg (Germany). Inst. for Theoretical Physics
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Physics
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 Nf = 2 + 1 clover fermions for the CLS ensemble H101 (a = 0. 0854 fm, m π = mK = 422 MeV). The computed CS kernel is in good agreement with experimental extractions and previous lattice studies.
- Research Organization:
- New Mexico State Univ., Las Cruces, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- FG02-96ER40965
- OSTI ID:
- 1850110
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 8 Vol. 2021; ISSN 1029-8479
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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