Title
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Transverse-distance dependent parton densities in the large-x regime
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Author
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Abstract
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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. |
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Language
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English
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Source (journal)
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Few-body systems. - Wien
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Publication
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Wien
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2014
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ISSN
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0177-7963
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DOI
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10.1007/S00601-014-0865-8
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Volume/pages
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55
:5-7
(2014)
, p. 303-308
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ISI
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000338316600003
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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