@article{ad3b3f2d80494fc1bc71739421874879,
title = "Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering",
abstract = "A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised 6LiD (deuteron) and NH3 (proton) targets is presented. All available data collected in the years 2003–2004 and 2007/2010 with the COMPASS spectrometer using a muon beam of 160GeV/c at the CERN SPS were analysed. The asymmetries provide access to the transversity distribution functions via a fragmentation function that in principle may be independently obtained from e+e− annihilation data. Results are presented, discussed and compared to existing measurements as well as to model predictions. Asymmetries of π+π− pairs measured with the proton target as a function of the Bjorken scaling variable are sizeable in the range x>0.032, indicating non-vanishing transversity distribution and di-hadron interference fragmentation functions. As already pointed out by several authors, the small asymmetries of π+π− measured on the 6LiD target can be interpreted as indication for a cancellation of u and d-quark transversity distributions.",
keywords = "Collins effect, Di-hadron, Fragmentation, SIDIS, Spin, Transversity",
author = "{The COMPASS Collaboration} and Alexeev, {G. D.} and Alexeev, {M. G.} and C. Alice and A. Amoroso and V. Andrieux and V. Anosov and K. Augsten and W. Augustyniak and Azevedo, {C. D.R.} and B. Badelek and J. Barth and R. Beck and Y. Bedfer and J. Bernhard and M. Bodlak and F. Bradamante and C. Braun and A. Bressan and Burtsev, {V. E.} and Chang, {W. C.} and C. Chatterjee and M. Chiosso and Chumakov, {A. G.} and Chung, {S. U.} and A. Cicuttin and Correia, {P. M.M.} and Crespo, {M. L.} and D. D'Ago and {Dalla Torre}, S. and Dasgupta, {S. S.} and S. Dasgupta and {Del Carro}, F. and I. Denisenko and Denisov, {O. Yu} and Donskov, {S. V.} and N. Doshita and Ch Dreisbach and W. D{\"u}nnweber and Dusaev, {R. R.} and D. Ecker and A. Efremov and C. Elia and D. Eremeev and P. Faccioli and M. Faessler and M. Finger and H. Fischer and Fl{\"o}thner, {K. J.} and W. Florian and J. Lichtenstadt",
note = "Publisher Copyright: {\textcopyright} 2023",
year = "2023",
month = oct,
day = "10",
doi = "10.1016/j.physletb.2023.138155",
language = "אנגלית",
volume = "845",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
}