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

S. Bastami; H. Avakian; A. V. Efremov; A. Kotzinian; B. U. Musch; B. Parsamyan; A. Prokudin; M. Schlegel; G. Schnell; P. Schweitzer; K. Tezgin

doi:10.1007/JHEP06(2019)007

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

S. Bastami, H. Avakian, A. V. Efremov, A. Kotzinian, B. U. Musch, B. Parsamyan, A. Prokudin, M. Schlegel, G. Schnell, P. Schweitzer, K. Tezgin

Division of Science (Berks)

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33 Scopus citations

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 / 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 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.

Original language	English (US)
Article number	7
Journal	Journal of High Energy Physics
Volume	2019
Issue number	6
DOIs	https://doi.org/10.1007/JHEP06(2019)007
State	Published - Jun 1 2019

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1007/JHEP06(2019)007

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title = "Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation",

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 / 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 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.",

author = "S. Bastami and H. Avakian and Efremov, {A. V.} and A. Kotzinian and Musch, {B. U.} and B. Parsamyan and A. Prokudin and M. Schlegel and G. Schnell and P. Schweitzer and K. Tezgin",

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doi = "10.1007/JHEP06(2019)007",

language = "English (US)",

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T1 - Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation

AU - Bastami, S.

AU - Avakian, H.

AU - Efremov, A. V.

AU - Kotzinian, A.

AU - Musch, B. U.

AU - Parsamyan, B.

AU - Prokudin, A.

AU - Schlegel, M.

AU - Schnell, G.

AU - Schweitzer, P.

AU - Tezgin, K.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - 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 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.

AB - 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 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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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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

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