@article{4b6ad73db37845a7a41af29df76abe81,
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 {Grosse Perdekamp}, M. and Makins, {Naomi C R} and Peng, {J. C.} and C. Riedl",
note = "Supported by FCT, Grants CERN/FIS-PAR/0022/2019 and CERN/FIS-PAR/0016/2021 (Portugal).Supported by BMBF - Bundesministerium f\u00FCr Bildung und Forschung (Germany).Supported by MEYS, Grants LM2015058, LM2018104 and LTT17018 and Charles University Grant PRIMUS/22/SCI/017 (Czech Republic).Supported by B. Sen fund (India).Supported by CERN-RFBR Grant 12-02-91500.Supported by MEXT and JSPS, Grants 18002006, 20540299, 18540281 and 26247032, the Daiko and Yamada Foundations (Japan).Supported by the Ministry of Science and Technology (Taiwan).Supported by the Israel Academy of Sciences and Humanities (Israel).Supported by the Tomsk Polytechnic University within the assignment of the Ministry of Science and Higher Education (Russia).Supported by the National Science Foundation, Grant no. PHY-1506416 (USA).Supported by NCN, Grant 2020/37/B/ST2/01547 (Poland).Supported by the European Union's Horizon 2020 research and innovation programme under grant agreement STRONG\u20132020 - No 824093.Supported by the DFG cluster of excellence \u2018Origin and Structure of the Universe\u2019 (www.universe-cluster.de) (Germany).Supported by the DFG Research Training Group Programmes 1102 and 2044 (Germany).Supported by the European Regional Development Fund under Grant No. TK133.Supported by ANR, France with P2IO LabEx (ANR-10-LABX-0038) in the framework \u201CInvestissements d'Avenir\u201D (ANR-11-IDEX-0003-01).Supported by the Funds for Research 2019-22 of the University of Eastern Piedmont.",
year = "2023",
month = mar,
day = "10",
doi = "10.1016/j.physletb.2023.137702",
language = "English (US)",
volume = "838",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
}