Probing transversity by measuring Λ polarisation in SIDIS

0553556 - ÚPT 2023 RIV NL eng J - Článek v odborném periodiku
Alexeev, G. D. - Alexeev, M. G. - Amoroso, A. - Andrieux, V. - Anosov, V. - Augsten, K. - Augustyniak, W. - Azevedo, C. - Badelek, B. - Balestra, F. - Ball, M. - Barth, J. - Beck, R. - Bedfer, Y. - Antequera, J. B. - Bernhard, J. - Bodlák, M. - Bradamante, F. - Bressan, A. - Burtsev, V. E. - Chang, W.-C. - Chatterjee, C. - Chiosso, M. - Chumakov, A. G. - Chung, S. U. - Cicuttin, A. - Correia, P. M. M. - Crespo, M. L. - D'Ago, D. - Srnka, Aleš … celkem 208 autorů
Probing transversity by measuring Λ polarisation in SIDIS.
Physics Letters. B. Roč. 824, 10 January (2022), č. článku 136834. ISSN 0370-2693. E-ISSN 1873-2445
Institucionální podpora: RVO:68081731
Klíčová slova: Quantum chromodynamics * Deep inelastic scattering * Lambda polarisation * Transversity * COMPASS
Obor OECD: Particles and field physics
Impakt faktor: 4.3, rok: 2022
Způsob publikování: Open access
https://www.sciencedirect.com/science/article/pii/S0370269321007747

Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadronpair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SIDIS), the chiral-odd transversity quark distribution functions hq1 are nowadays well established. Several possible channels to access these functions were originally proposed. One candidate is the measurement of the polarisation of hyperons produced in SIDIS off transversely polarised nucleons, where the transverse polarisation of the struck quark might be transferred to the final-state hyperon. In this article, we present the COMPASS results on the transversity-induced polarisation of and over line hyperons produced in SIDIS off transversely polarised protons. Within the experimental uncertainties, no significant deviation from zero was observed. The results are discussed in the context of different models taking into account previous experimental results on hu1 and hd1.
Trvalý link: https://hdl.handle.net/11104/0335319