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Study of the worm-gear-T function g1T with semi-inclusive DIS data

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Horstmann, Malin ; Schäfer, Andreas ; Vladimirov, Alexey
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Date of publication of this fulltext: 09 Feb 2024 07:27


The worm-gear-T function parametrizes the probability of finding a longitudinally polarized quark inside a transversely polarized hadron. We extract it from data on polarized semi-inclusive deep-inelastic scattering measured at COMPASS and HERMES. As a theoretical model, we use a Wandzura-Wilczek-type approximation at next-to-leading order. We find that at present, the data quality is ...


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