@article{f7486cf203494eb8ab8aa534efa4c22b,
title = "Double J/ψ production in pion-nucleon scattering at COMPASS",
abstract = "We present the study of the production of double J/ψ mesons using COMPASS data collected with a 190 GeV/c π− beam scattering off NH3, Al and W targets. Kinematic distributions of the collected double J/ψ events are analysed, and the double J/ψ production cross section is estimated for each of the COMPASS targets. The NH3 results are compared to predictions from single- and double-parton scattering models as well as the pion intrinsic charm and the tetraquark exotic resonance hypotheses. It is demonstrated that the single parton scattering production mechanism gives the dominant contribution that is sufficient to describe the data. An upper limit on the double intrinsic charm content of the pion is evaluated. No significant signatures that could be associated with exotic tetraquarks are found in the double J/ψ mass spectrum.",
keywords = "COMPASS, Charmonia production, Double J/ψ, Intrinsic charm, Single parton scattering",
author = "{The COMPASS Collaboration} and Alexeev, {G. D.} and Alexeev, {M. G.} and A. Amoroso and V. Andrieux and V. Anosov and K. Augsten and W. Augustyniak and Azevedo, {C. D.R.} and B. Bade{\l}ek and M. Ball and J. Barth and R. Beck and Y. Bedfer and J. Bernhard and M. Bodlak and F. Bradamante 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 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 D. Eremeev and Eversheim, {P. D.} and P. Faccioli and M. Faessler and M. Finger and H. Fischer and Fl{\"o}thner, {K. J.} and W. Florian and C. Franco and Friedrich, {J. M.} and J. Lichtenstadt",
note = "Publisher Copyright: {\textcopyright} 2023",
year = "2023",
month = mar,
day = "10",
doi = "10.1016/j.physletb.2023.137702",
language = "אנגלית",
volume = "838",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
}