Rapidity evolution of TMDs with running coupling

URN to cite this document:: urn:nbn:de:bvb:355-epub-535228
DOI to cite this document:: 10.5283/epub.53522

Balitsky, Ian ; Chirilli, Giovanni A.

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Date of publication of this fulltext: 24 Jan 2023 09:05

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Abstract

The scale of a coupling constant for rapidity-only evolution of transverse-momentum dependent (TMD) operators in the Sudakov kinematic region is calculated using the Brodsky-Lepage-Mackenzie optimal scale setting [S. J. Brodsky et al., Phys. Rev. D 28, 228 (1983).]. The effective argument of a coupling constant is halfway in the logarithmical scale between the transverse momentum and energy of TMD distribution. The resulting rapidity-only evolution equation is solved for quark and gluon TMDs.

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