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- Title
Transverse-Distance Dependent Parton Densities in the Large- x Regime.
- Authors
Cherednikov, I.
- Abstract
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 12 GeV and the electron-ion collider.
- Subjects
TRANSVERSE Doppler effect; PARTONS; QUANTUM chromodynamics; HADRONIC atoms; VACUUM technology
- Publication
Few-Body Systems, 2014, Vol 55, Issue 5-7, p303
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-014-0865-8