期刊
PHYSICAL REVIEW D
卷 106, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.034007
关键词
-
资金
- DOE [DE-AC05-06OR23177, DE-FG02-97ER41028]
The scale of a coupling constant for rapidity-only evolution of transverse-momentum dependent (TMD) operators in the Sudakov kinematic region has been calculated using the Brodsky-Lepage-Mackenzie optimal scale setting. The effective argument of a coupling constant is located halfway on the logarithmical scale between the transverse momentum and energy of TMD distributions. The resulting rapidity-only evolution equation has been solved for quark and gluon TMDs.
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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