PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Strong interactions and Hadron Physics
Latest Hermes results on azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic scattering by transversely polarized protons
L.L.Β Pappalardo* and G.Β Schnell
Full text: pdf
Pre-published on: November 03, 2022
Published on: June 15, 2023
Azimuthal single- and double-spin asymmetries measured at HERMES in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from a transversely polarized hydrogen target are presented. The results of a re-analysis of the previously published Collins and Sivers asymmetries, extended to include protons and antiprotons as well as an extraction in a multi-dimensional binning and enlarged phase space, is reported along with the corresponding results for the remaining single- and double-spin asymmetries associated to the semi-inclusive deep-inelastic scattering process with a transversely polarized target. Among those results, significant non-vanishing ${\rm cos}(\phi βˆ’ \phi_s)$ modulations provide evidence for a sizable worm-gear distribution $𝑔_{1𝑇}$ . Most of the other modulations are found to be consistent with zero with the notable exception of large ${\rm sin}(πœ™_s)$ modulations for charged pions and positively charged kaons.
DOI: https://doi.org/10.22323/1.414.0783
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.