Applications of the WW-type approximation to SIDIS

Abstract

We explore the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed $\mathcal{O}(1/Q^2)$ terms in the Wandzura-Wilczek-type (WW-type) approximation, which consists in systematically assuming that $\bar{q}gq$-correlators are much smaller than $\bar{q}q$-correlators. Under the applicability of WW-type approximations, certain relations among transverse momentum dependent parton distribution functions (TMDs) and fragmentation functions (FFs) occur which are used to approximate SIDIS cross-section in terms of a smaller subset of TMDs and FFs. We discuss the applicability of the WW-type approximations on the basis of available data.

6 pages, 3 figures, DIS2019 8-12 April, Torino, Italy

References in corpus (5)

• Nucleon Generalized Parton Distributions from Full Lattice QCD
• Semi-Inclusive Deep Inelastic Scattering in Wandzura-Wilczek-type approximation
• Simultaneous extraction of transversity and Collins functions from new SIDIS and e+e- data
• Semi-Inclusive ${\pi }_0$ target and beam-target asymmetries from 6 GeV electron scattering with CLAS
• SIDIS Asymmetries in Quark-Diquark Model