Universality and Evolution of TMDs

Details Universality and Evolution of TMDs Universality and Evolution of TMDs

2011-10-27

arxiv.org/abs/1110.6099v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of the Third International Workshop on Transverse Polarization Phenomena in Hard Scattering (Tran

Scientific paper

In this talk, we summarize how QCD evolution can be exploited to improve the treatment of transverse momentum dependent (TMD) parton distribution and fragmentation functions. The methods allow existing non-perturbative fits to be turned into fully evolved TMDs that are consistent with a complete TMD-factorization formalism over the full range of kT. We argue that evolution is essential to the predictive power of calculations that utilize TMD parton distribution and fragmentation functions, especially TMD observables that are sensitive to transverse spin.

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