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

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Bastami, S. ; Avakian, H. ; Efremov, A. V. ; Kotzinian, A. ; Musch, B. U. ; Parsamyan, B. ; Prokudin, A. ; Schlegel, M. ; Schnell, G. ; Schweitzer, P. ; Tezgin, K.
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 06 Apr 2021 11:37


We present the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed O(1/Q2) terms in the Wandzura-Wilczek-type approximation, which consists in systematically assuming that q¯¯gq-terms are much smaller than q¯¯q-correlators. We compute all twist-2 and twist-3 structure functions and the corresponding asymmetries, and ...


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