Study of worm-gear-T function $g_{1T}$ with semi-inclusive DIS data

Autor:	Horstmann, Malin, Schafer, Andreas, Vladimirov, Alexey
Rok vydání:	2022
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.107.034016
Popis:	The worm-gear-T function parameterizes the probability to find a longitudinally polarized quark inside a transversely polarized hadron. We extract it from data on polarized semi-inclusive deep-inelastic scattering (SIDIS) measured at COMPASS and HERMES. As a theoretical model, we use a Wandzura-Wilczek-type approximation at the next-to-leading order. We find that, at present, the data quality is insufficient to determine the worm-gear-T function faithfully. We also provide predictions for the transverse single-spin asymmetry associated with the worm-gear-T function, which could be measured in weak-boson production at STAR. Comment: 12 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2210.07268 Zobrazit plný text záznamu View this record from Arxiv