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Determination of the Collins-Soper Kernel from Lattice QCD

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Schlemmer, Maximilian ; Vladimirov, Alexey ; Zimmermann, Christian ; Engelhardt, Michael ; Schäfer, Andreas
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 20 Feb 2022 14:54


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 = ...


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