期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP06(2019)007
关键词
Deep Inelastic Scattering (Phenomenology); QCD Phenomenology
资金
- U.S. Department of Energy [DE-AC05-06OR23177]
- National Science Foundation [PHY-1623454, PHY-1812423]
- Wilhelm Schuler Stiftung
- DOE [DE-FG02-04ER41309]
- U.S. Department of Energy (DOE) [DE-FG02-04ER41309] Funding Source: U.S. Department of Energy (DOE)
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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