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Volume 346 - 23rd International Spin Physics Symposium (SPIN2018) - Parallel Session: Structure of the Nucleon: TMDs (A. Bacchetta, J. Drachenberg and B. Parsamyan)
First extraction of transversity from data on lepton-hadron scattering and hadronic collisions
M. Radici
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Pre-published on: 2019 August 19
Published on: 2019 August 23
We describe the extraction of the transversity distribution for the first time based on the global analysis of pion-pair production in deep-inelastic scattering and in proton-proton collisions with one transversely polarized proton. The extraction involves di-hadron fragmentation functions, which are taken from the analysis of the corresponding pion-pair production in electron-positron annihilation. We discuss the impact of COMPASS pseudodata from a future measurement of deep-inelastic scattering on transversely polarized deuterons. The knowledge of transversity is important among other things for detecting possible signals of new physics in high-precision low-energy experiments.
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