Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation

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Date
2019-06-04
Author
Bastami, S.
Avakian, H.
Efremov, A. V.
Kotzinian, A.
Musch, B. U.
Parsamyan, B.
Prokudin, A.
Schlegel, M.
Schnell, Gunar
Schweitzer, P.
Tezgin, K.
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  Estadisticas en RECOLECTA
(LA Referencia)

Journal Of High Energy Physics 6 : (2019) // Article ID 007
URI
http://hdl.handle.net/10810/41387
Abstract
We present the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed O(1/Q(2) terms in the Wandzura-Wilczek-type approximation, which consists in systematically assuming that (q) over bar gq-terms are much smaller than (q) over barq-correlators. We compute all twist-2 and twist-3 structure functions and the corresponding asymmetries, and discuss the applicability of the Wandzura-Wilczek-type approximations on the basis of available data. We make predictions that can be tested by data from COMPASS, HERMES, Jefferson Lab, and the future Electron-Ion Collider. The results of this paper can be readily used for phenomenology and for event generators, and will help to improve the description of semi-inclusive deep-inelastic processes in terms of transverse momentum dependent parton distribution functions and fragmentation functions beyond the leading twist.
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Except where otherwise noted, this item's license is described as This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited