[{"doi":"10.1016/j.physletb.2023.137871","ddc":["530"],"language":[{"iso":"eng"}],"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.","type":"journal_article","author":[{"first_name":"Pietro","full_name":"Faccioli, Pietro","last_name":"Faccioli"},{"id":"30d4014e-7753-11eb-b44b-db6d61112e73","orcid":"0000-0002-5636-9259","full_name":"Krätschmer, Ilse","first_name":"Ilse","last_name":"Krätschmer"},{"first_name":"Carlos","full_name":"Lourenço, Carlos","last_name":"Lourenço"}],"day":"10","title":"Low-pT quarkonium polarization measurements: Challenges and opportunities","citation":{"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>","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).","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>.","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>.","ista":"Faccioli P, Krätschmer I, Lourenço C. 2023. Low-pT quarkonium polarization measurements: Challenges and opportunities. Physics Letters B. 840, 137871.","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."},"intvolume":"       840","status":"public","department":[{"_id":"MaRo"}],"quality_controlled":"1","publication":"Physics Letters B","publisher":"Elsevier","date_created":"2024-01-08T13:09:17Z","month":"05","publication_identifier":{"eissn":["1873-2445"],"issn":["0370-2693"]},"date_updated":"2024-01-09T09:02:22Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","scopus_import":"1","has_accepted_license":"1","year":"2023","oa_version":"Published Version","article_type":"original","volume":840,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","image":"/images/cc_by.png","short":"CC BY (4.0)"},"file_date_updated":"2024-01-09T08:59:24Z","oa":1,"publication_status":"published","_id":"14753","date_published":"2023-05-10T00:00:00Z","abstract":[{"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.","lang":"eng"}],"file":[{"success":1,"date_created":"2024-01-09T08:59:24Z","content_type":"application/pdf","relation":"main_file","file_id":"14762","date_updated":"2024-01-09T08:59:24Z","access_level":"open_access","checksum":"02dec160dbc81d95985e755869d8afbf","file_name":"2023_PhysicsLettersB_Faccioli.pdf","creator":"dernst","file_size":855494}],"article_number":"137871","article_processing_charge":"Yes (via OA deal)"},{"language":[{"iso":"eng"}],"doi":"10.1016/j.physletb.2019.135016","ddc":["530"],"day":"10","type":"journal_article","author":[{"last_name":"Schmickler","first_name":"C.H.","full_name":"Schmickler, C.H."},{"last_name":"Hammer","first_name":"H.-W.","full_name":"Hammer, H.-W."},{"full_name":"Volosniev, Artem","first_name":"Artem","last_name":"Volosniev","orcid":"0000-0003-0393-5525","id":"37D278BC-F248-11E8-B48F-1D18A9856A87"}],"citation":{"ama":"Schmickler CH, Hammer H-W, Volosniev A. Universal physics of bound states of a few charged particles. <i>Physics Letters B</i>. 2019;798. doi:<a href=\"https://doi.org/10.1016/j.physletb.2019.135016\">10.1016/j.physletb.2019.135016</a>","apa":"Schmickler, C. H., Hammer, H.-W., &#38; Volosniev, A. (2019). Universal physics of bound states of a few charged particles. <i>Physics Letters B</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.physletb.2019.135016\">https://doi.org/10.1016/j.physletb.2019.135016</a>","short":"C.H. Schmickler, H.-W. Hammer, A. Volosniev, Physics Letters B 798 (2019).","mla":"Schmickler, C. H., et al. “Universal Physics of Bound States of a Few Charged Particles.” <i>Physics Letters B</i>, vol. 798, 135016, Elsevier, 2019, doi:<a href=\"https://doi.org/10.1016/j.physletb.2019.135016\">10.1016/j.physletb.2019.135016</a>.","chicago":"Schmickler, C.H., H.-W. Hammer, and Artem Volosniev. “Universal Physics of Bound States of a Few Charged Particles.” <i>Physics Letters B</i>. Elsevier, 2019. <a href=\"https://doi.org/10.1016/j.physletb.2019.135016\">https://doi.org/10.1016/j.physletb.2019.135016</a>.","ista":"Schmickler CH, Hammer H-W, Volosniev A. 2019. Universal physics of bound states of a few charged particles. Physics Letters B. 798, 135016.","ieee":"C. H. Schmickler, H.-W. Hammer, and A. Volosniev, “Universal physics of bound states of a few charged particles,” <i>Physics Letters B</i>, vol. 798. Elsevier, 2019."},"title":"Universal physics of bound states of a few charged particles","publication":"Physics Letters B","quality_controlled":"1","department":[{"_id":"MiLe"}],"status":"public","intvolume":"       798","publisher":"Elsevier","isi":1,"month":"11","date_created":"2019-10-18T18:33:32Z","scopus_import":"1","external_id":{"isi":["000494939000086"],"arxiv":["1904.00913"]},"date_updated":"2023-08-30T07:06:42Z","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publication_identifier":{"issn":["0370-2693"]},"article_type":"original","year":"2019","has_accepted_license":"1","oa_version":"Published Version","file_date_updated":"2020-07-14T12:47:46Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","image":"/images/cc_by.png","short":"CC BY (4.0)"},"volume":798,"publication_status":"published","oa":1,"file":[{"date_created":"2019-10-25T12:47:04Z","file_id":"6974","relation":"main_file","content_type":"application/pdf","checksum":"d27f983b34ea7dafdf356afbf9472fbf","access_level":"open_access","date_updated":"2020-07-14T12:47:46Z","creator":"dernst","file_size":528362,"file_name":"2019_PhysicsLettersB_Schmickler.pdf"}],"article_number":"135016","_id":"6955","abstract":[{"lang":"eng","text":"We study few-body bound states of charged particles subject to attractive zero-range/short-range plus repulsive Coulomb interparticle forces. The characteristic length scales of the system at zero energy are set by the Coulomb length scale D and the Coulomb-modified effective range r eff. We study shallow bound states of charged particles with D >> r eff and show that these systems obey universal scaling laws different from neutral particles. An accurate description of these states requires both the Coulomb-modified scattering length and the effective range unless the Coulomb interaction is very weak (D -> ). Our findings are relevant for bound states whose spatial extent is significantly larger than the range of the attractive potential. These states enjoy universality – their character is independent of the shape of the short-range potential."}],"date_published":"2019-11-10T00:00:00Z","arxiv":1,"article_processing_charge":"No"},{"arxiv":1,"article_processing_charge":"No","issue":"1-2","date_published":"2001-08-09T00:00:00Z","_id":"1453","abstract":[{"text":"In this Letter we exhibit a one-parameter family of new Taub-NUT instantons parameterized by a half-line. The endpoint of the half-line will be the reducible Yang-Mills instanton corresponding to the Eguchi-Hanson-Gibbons L2 harmonic 2-form, while at an inner point we recover the Pope-Yuille instanton constructed as a projection of the Levi-Civitá connection onto the positive su(2)+ ⊂ so(4) subalgebra. Our method imitates the Jackiw-Nohl-Rebbi construction originally designed for flat R4. That is we find a one-parameter family of harmonic functions on the Taub-NUT space with a point singularity, rescale the metric and project the obtained Levi-Civitá connection onto the other negative su(2)- ⊂ so(4) part. Our solutions will possess the full U(2) symmetry, and thus provide more solutions to the recently proposed U(2) symmetric ansatz of Kim and Yoon.","lang":"eng"}],"publication_status":"published","oa":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/hep-th/0105118"}],"volume":514,"article_type":"original","publist_id":"5743","oa_version":"Preprint","year":"2001","scopus_import":"1","external_id":{"arxiv":["hep-th/0105118"]},"date_updated":"2023-05-31T11:51:37Z","user_id":"ea97e931-d5af-11eb-85d4-e6957dddbf17","publication_identifier":{"issn":["0370-2693"]},"page":"189 - 199","month":"08","extern":"1","date_created":"2018-12-11T11:52:07Z","publisher":"Elsevier","publication":"Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics","quality_controlled":"1","intvolume":"       514","status":"public","citation":{"short":"G. Etesi, T. Hausel, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 514 (2001) 189–199.","apa":"Etesi, G., &#38; Hausel, T. (2001). Geometric construction of new Yang-Mills instantons over Taub-NUT space. <i>Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics</i>. Elsevier. <a href=\"https://doi.org/10.1016/S0370-2693(01)00821-8\">https://doi.org/10.1016/S0370-2693(01)00821-8</a>","ama":"Etesi G, Hausel T. Geometric construction of new Yang-Mills instantons over Taub-NUT space. <i>Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics</i>. 2001;514(1-2):189-199. doi:<a href=\"https://doi.org/10.1016/S0370-2693(01)00821-8\">10.1016/S0370-2693(01)00821-8</a>","ieee":"G. Etesi and T. Hausel, “Geometric construction of new Yang-Mills instantons over Taub-NUT space,” <i>Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics</i>, vol. 514, no. 1–2. Elsevier, pp. 189–199, 2001.","ista":"Etesi G, Hausel T. 2001. Geometric construction of new Yang-Mills instantons over Taub-NUT space. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 514(1–2), 189–199.","chicago":"Etesi, Gábor, and Tamás Hausel. “Geometric Construction of New Yang-Mills Instantons over Taub-NUT Space.” <i>Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics</i>. Elsevier, 2001. <a href=\"https://doi.org/10.1016/S0370-2693(01)00821-8\">https://doi.org/10.1016/S0370-2693(01)00821-8</a>.","mla":"Etesi, Gábor, and Tamás Hausel. “Geometric Construction of New Yang-Mills Instantons over Taub-NUT Space.” <i>Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics</i>, vol. 514, no. 1–2, Elsevier, 2001, pp. 189–99, doi:<a href=\"https://doi.org/10.1016/S0370-2693(01)00821-8\">10.1016/S0370-2693(01)00821-8</a>."},"title":"Geometric construction of new Yang-Mills instantons over Taub-NUT space","day":"09","author":[{"last_name":"Etesi","first_name":"Gábor","full_name":"Etesi, Gábor"},{"id":"4A0666D8-F248-11E8-B48F-1D18A9856A87","full_name":"Hausel, Tamas","first_name":"Tamas","last_name":"Hausel"}],"type":"journal_article","acknowledgement":"We would like to acknowledge the financial support provided by the Miller Institute of Basic Research in Science, the Japan Society for the Promotion of Science, grant No. P99736 and the partial support by OTKA grant No. T032478.","language":[{"iso":"eng"}],"doi":"10.1016/S0370-2693(01)00821-8"}]