Nonperturbative determination of the Collins-Soper kernel from quasitransverse-momentum-dependent wave functions

URN to cite this document:: urn:nbn:de:bvb:355-epub-536111
DOI to cite this document:: 10.5283/epub.53611

Chu, Min-Huan ; Deng, Zhi-Fu ; Hua, Jun ; Ji, Xiangdong ; Schäfer, Andreas ; Su, Yushan ; Sun, Peng ; Wang, Wei ; Yang, Yi-Bo ; Zeng, Jun ; Zhang, Jialu ; Zhang, Jian-Hui ; Zhang, Qi-An

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Date of publication of this fulltext: 23 Jan 2023 15:48

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Abstract

In the framework of large-momentum effective theory at one-loop matching accuracy, we perform a lattice calculation of the Collins-Soper kernel, which governs the rapidity evolution of transversemomentum-dependent (TMD) distributions. We first obtain the quasi-TMD wave functions at three different meson momenta, on a lattice with valence clover quarks on a dynamical highly improved staggered ...