Transverse-distance dependent parton densities in the large-x regimeTransverse-distance dependent parton densities in the large-x regime
Faculty of Sciences. Physics

Elementary Particle Physics

article

2014Wien, 2014

Physics

Few-body systems. - Wien

55(2014):5-7, p. 303-308

0177-7963

000338316600003

E

English (eng)

University of Antwerp

QCD factorization approach in the field-theoretic description of the semi-inclusive hadronic processes in the large Bjorken x approximation implies extraction of the three-dimensional parton distribution functions as a convolution of a collinear jet function and soft transverse-distance dependent (TDD) function defined as a vacuum average of a partially light-like Wilson loop. The soft function can be interpreted, therefore, as an element of generalized loop space. A class of classically conformal-invariant transformations of the elements of this space is generated by the non-local area derivative operator which corresponds to a diffeomorphism in the loop space and determines equations of motion, the latter being associated with the rapidity evolution of the soft TDD functions. We propose a large-x TDD factorization framework and discuss practical applications of this approach to the phenomenology of the TDDs accessible in future experimental programs at the Jefferson Lab 12GeV and the electron-ion collider.

https://repository.uantwerpen.be/docman/iruaauth/0bb56d/a288062.pdf

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