[{"date_created":"2024-01-08T13:09:17Z","status":"public","publication_status":"published","publication":"Physics Letters B","publisher":"Elsevier","doi":"10.1016/j.physletb.2023.137871","abstract":[{"lang":"eng","text":"Several fixed-target experiments reported J/ψ and ϒ polarizations, as functions of Feynman x (xF) and transverse momentum (PT), in three different frames, using different combinations of beam particles, target nuclei, and collision energies. Despite the diverse and heterogeneous picture formed by these measurements, a detailed look allows us to discern qualitative physical patterns that inspire a simple empirical model. This data-driven scenario offers a good quantitative description of the J/ψ and ϒ(1S) polarizations measured in proton- and pion-nucleus collisions, in the xF 0.5 domain: more than 80 data points (not statistically independent) are well reproduced with only one free parameter. This study sets the context for future low-PT\r\n quarkonium polarization measurements in proton- and pion-nucleus collisions, such as those to be made by the AMBER experiment, and shows that such measurements provide significant constraints on the poorly-known parton distribution functions of the pion."}],"file_date_updated":"2024-01-09T08:59:24Z","day":"10","author":[{"last_name":"Faccioli","first_name":"Pietro","full_name":"Faccioli, Pietro"},{"full_name":"Krätschmer, Ilse","id":"30d4014e-7753-11eb-b44b-db6d61112e73","first_name":"Ilse","last_name":"Krätschmer","orcid":"0000-0002-5636-9259"},{"full_name":"Lourenço, Carlos","first_name":"Carlos","last_name":"Lourenço"}],"title":"Low-pT quarkonium polarization measurements: Challenges and opportunities","file":[{"relation":"main_file","access_level":"open_access","date_updated":"2024-01-09T08:59:24Z","checksum":"02dec160dbc81d95985e755869d8afbf","content_type":"application/pdf","file_name":"2023_PhysicsLettersB_Faccioli.pdf","date_created":"2024-01-09T08:59:24Z","file_size":855494,"creator":"dernst","success":1,"file_id":"14762"}],"volume":840,"quality_controlled":"1","intvolume":"       840","keyword":["Nuclear and High Energy Physics"],"acknowledgement":"P.F. and C.L. acknowledge support from Fundação para a Ciência e a Tecnologia, Portugal, under contract CERN/FIS-PAR/0010/2019.\r\nOpen Access funded by SCOAP3.","scopus_import":"1","article_number":"137871","month":"05","oa":1,"ddc":["530"],"oa_version":"Published Version","publication_identifier":{"issn":["0370-2693"],"eissn":["1873-2445"]},"type":"journal_article","date_published":"2023-05-10T00:00:00Z","article_type":"original","citation":{"ieee":"P. Faccioli, I. Krätschmer, and C. Lourenço, “Low-pT quarkonium polarization measurements: Challenges and opportunities,” <i>Physics Letters B</i>, vol. 840. Elsevier, 2023.","chicago":"Faccioli, Pietro, Ilse Krätschmer, and Carlos Lourenço. “Low-PT Quarkonium Polarization Measurements: Challenges and Opportunities.” <i>Physics Letters B</i>. Elsevier, 2023. <a href=\"https://doi.org/10.1016/j.physletb.2023.137871\">https://doi.org/10.1016/j.physletb.2023.137871</a>.","apa":"Faccioli, P., Krätschmer, I., &#38; Lourenço, C. (2023). Low-pT quarkonium polarization measurements: Challenges and opportunities. <i>Physics Letters B</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.physletb.2023.137871\">https://doi.org/10.1016/j.physletb.2023.137871</a>","short":"P. Faccioli, I. Krätschmer, C. Lourenço, Physics Letters B 840 (2023).","ama":"Faccioli P, Krätschmer I, Lourenço C. Low-pT quarkonium polarization measurements: Challenges and opportunities. <i>Physics Letters B</i>. 2023;840. doi:<a href=\"https://doi.org/10.1016/j.physletb.2023.137871\">10.1016/j.physletb.2023.137871</a>","ista":"Faccioli P, Krätschmer I, Lourenço C. 2023. Low-pT quarkonium polarization measurements: Challenges and opportunities. Physics Letters B. 840, 137871.","mla":"Faccioli, Pietro, et al. “Low-PT Quarkonium Polarization Measurements: Challenges and Opportunities.” <i>Physics Letters B</i>, vol. 840, 137871, Elsevier, 2023, doi:<a href=\"https://doi.org/10.1016/j.physletb.2023.137871\">10.1016/j.physletb.2023.137871</a>."},"article_processing_charge":"Yes (via OA deal)","year":"2023","_id":"14753","language":[{"iso":"eng"}],"has_accepted_license":"1","date_updated":"2024-01-09T09:02:22Z","department":[{"_id":"MaRo"}],"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"}]