Echevarria, Miguel G. and Idilbi, Ahmad and Schaefer, Andreas and Scimemi, Ignazio (2013) Model independent evolution of transverse momentum dependent distribution functions (TMDs) at NNLL. EUROPEAN PHYSICAL JOURNAL C, 73 (12): 2636. ISSN 1434-6044, 1434-6052
Full text not available from this repository. (Request a copy)Abstract
We discuss the evolution of the eight leading-twist transverse momentum dependent parton distribution functions, which turns out to be universal and spin independent. By using the highest order perturbatively calculable ingredients at our disposal, we perform the resummation of the large logarithms that appear in the evolution kernel of transverse momentum distributions up to next-to-next-to-leading logarithms (NNLL), thus obtaining an expression for the kernel with highly reduced model dependence. Our results can also be obtained using the standard CSS approach when a particular choice of the b (au) prescription is used. In this sense, and while restricted to the perturbative domain of applicability, we consider our results as a "prediction" of the correct value of b (max) which is very close to 1.5 GeV-1. We explore under which kinematical conditions the effects of the non-perturbative region are negligible, and hence the evolution of transverse momentum distributions can be applied in a model independent way. The application of the kernel is illustrated by considering the unpolarized transverse momentum dependent parton distribution function and the Sivers function.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DRELL-YAN; PARTON DISTRIBUTIONS; BOSON; QCD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Mar 2020 07:50 |
| Last Modified: | 26 Mar 2020 07:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15664 |
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