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

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 languageEnglish (US)
Article number7
JournalJournal of High Energy Physics
Volume2019
Issue number6
DOIs
StatePublished - Jun 1 2019

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inelastic scattering
COMPASS (programming language)
correlators
approximation
phenomenology
transverse momentum
hadrons
partons
fragmentation
generators
distribution functions
asymmetry
cross sections
predictions
ions
electrons

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Bastami, S., Avakian, H., Efremov, A. V., Kotzinian, A., Musch, B. U., Parsamyan, B., ... Tezgin, K. (2019). Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation. Journal of High Energy Physics, 2019(6), [7]. https://doi.org/10.1007/JHEP06(2019)007
Bastami, S. ; Avakian, H. ; Efremov, A. V. ; Kotzinian, A. ; Musch, B. U. ; Parsamyan, B. ; Prokudin, Alexey ; Schlegel, M. ; Schnell, G. ; Schweitzer, P. ; Tezgin, K. / Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation. In: Journal of High Energy Physics. 2019 ; Vol. 2019, No. 6.
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Bastami, S, Avakian, H, Efremov, AV, Kotzinian, A, Musch, BU, Parsamyan, B, Prokudin, A, Schlegel, M, Schnell, G, Schweitzer, P & Tezgin, K 2019, 'Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation', Journal of High Energy Physics, vol. 2019, no. 6, 7. https://doi.org/10.1007/JHEP06(2019)007

Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation. / Bastami, S.; Avakian, H.; Efremov, A. V.; Kotzinian, A.; Musch, B. U.; Parsamyan, B.; Prokudin, Alexey; Schlegel, M.; Schnell, G.; Schweitzer, P.; Tezgin, K.

In: Journal of High Energy Physics, Vol. 2019, No. 6, 7, 01.06.2019.

Research output: Contribution to journalArticle

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AU - Bastami, S.

AU - Avakian, H.

AU - Efremov, A. V.

AU - Kotzinian, A.

AU - Musch, B. U.

AU - Parsamyan, B.

AU - Prokudin, Alexey

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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Bastami S, Avakian H, Efremov AV, Kotzinian A, Musch BU, Parsamyan B et al. Semi-inclusive deep-inelastic scattering in Wandzura-Wilczek-type approximation. Journal of High Energy Physics. 2019 Jun 1;2019(6). 7. https://doi.org/10.1007/JHEP06(2019)007