학술논문
Probing transversity by measuring Λ polarisation in SIDIS
Document Type
article
Author
G.D. Alexeev; M.G. Alexeev; A. Amoroso; V. Andrieux; V. Anosov; K. Augsten; W. Augustyniak; C.D.R. Azevedo; B. Badełek; F. Balestra; M. Ball; J. Barth; R. Beck; Y. Bedfer; J. Berenguer Antequera; J. Bernhard; M. Bodlak; F. Bradamante; A. Bressan; V.E. Burtsev; W.-C. Chang; C. Chatterjee; M. Chiosso; A.G. Chumakov; S.-U. Chung; A. Cicuttin; P.M.M. Correia; M.L. Crespo; D. D'Ago; S. Dalla Torre; S.S. Dasgupta; S. Dasgupta; I. Denisenko; O.Yu. Denisov; S.V. Donskov; N. Doshita; Ch. Dreisbach; W. Dünnweber; R.R. Dusaev; A. Efremov; C. Elia; D. Eremeev; P.D. Eversheim; P. Faccioli; M. Faessler; A. Ferrero; M. Finger; M. Finger, jr.; H. Fischer; K.J. Flöthner; C. Franco; J.M. Friedrich; V. Frolov; L.G. Garcia Ordòñez; F. Gautheron; O.P. Gavrichtchouk; S. Gerassimov; J. Giarra; D. Giordano; I. Gnesi; M. Gorzellik; A. Grasso; A. Gridin; M. Grosse Perdekamp; B. Grube; A. Guskov; D. von Harrach; R. Heitz; M. Hoffmann; N. Horikawa; N. d'Hose; C.-Y. Hsieh; S. Huber; S. Ishimoto; A. Ivanov; T. Iwata; M. Jandek; V. Jary; R. Joosten; E. Kabuß; D.-H. Kang; F. Kaspar; A. Kerbizi; B. Ketzer; G.V. Khaustov; Yu.A. Khokhlov; Yu. Kisselev; F. Klein; J.H. Koivuniemi; V.N. Kolosov; K. Kondo Horikawa; I. Konorov; V.F. Konstantinov; A.M. Kotzinian; O.M. Kouznetsov; A. Koval; Z. Kral; F. Krinner; Y. Kulinich; F. Kunne; K. Kurek; R.P. Kurjata; A. Kveton; K. Lavickova; S. Levorato; Y.-S. Lian; J. Lichtenstadt; P.-J. Lin; R. Longo; V.E. Lyubovitskij; A. Maggiora; A. Magnon; N. Makins; N. Makke; G.K. Mallot; A. Maltsev; S.A. Mamon; B. Marianski; A. Martin; J. Marzec; J. Matoušek; T. Matsuda; G. Mattson; G.V. Meshcheryakov; F. Metzger; M. Meyer; W. Meyer; Yu.V. Mikhailov; M. Mikhasenko; E. Mitrofanov; Y. Miyachi; A. Moretti; A. Nagaytsev; C. Naim; T.S. Negrini; D. Neyret; J. Nový; W.-D. Nowak; G. Nukazuka; A.S. Nunes; A.G. Olshevsky; M. Ostrick; D. Panzieri; B. Parsamyan; S. Paul; H. Pekeler; J.-C. Peng; M. Pešek; D.V. Peshekhonov; M. Pešková; N. Pierre; S. Platchkov; J. Pochodzalla; V.A. Polyakov; J. Pretz; M. Quaresma; C. Quintans; G. Reicherz; C. Riedl; T. Rudnicki; D.I. Ryabchikov; A. Rychter; A. Rymbekova; V.D. Samoylenko; A. Sandacz; S. Sarkar; I.A. Savin; G. Sbrizzai; P. Schiavon; H. Schmieden; A. Selyunin; K. Sharko; L. Sinha; M. Slunecka; J. Smolik; F. Sozzi; A. Srnka; D. Steffen; M. Stolarski; O. Subrt; M. Sulc; H. Suzuki; P. Sznajder; S. Tessaro; F. Tessarotto; A. Thiel; J. Tomsa; F. Tosello; A. Townsend; V. Tskhay; S. Uhl; B.I. Vasilishin; A. Vauth; B.M. Veit; J. Veloso; B. Ventura; A. Vidon; M. Virius; M. Wagner; S. Wallner; K. Zaremba; P. Zavada; M. Zavertyaev; M. Zemko; E. Zemlyanichkina; Y. Zhao; M. Ziembicki
Source
Physics Letters B, Vol 824, Iss , Pp 136834- (2022)
Subject
Language
English
ISSN
0370-2693
Abstract
Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SIDIS), the chiral-odd transversity quark distribution functions h1q are nowadays well established. Several possible channels to access these functions were originally proposed. One candidate is the measurement of the polarisation of Λ 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 Λ and Λ¯ 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 h1u and h1d.