STI Publications - View Publication Form #18409
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Publication Information
| Title | Dynamics in near-threshold J/psi photoproduction | ||||
| Abstract | The study of J/psi photoproduction at low energies has consequences for the understanding of multiple aspects of nonperturbative QCD, ranging from mechanical properties of the proton, to the binding inside nuclei, and the existence of hidden-charm pentaquarks. Factorization of the photon-ccbar and nucleon dynamics or Vector Meson Dominance are often invoked to justify these studies. Alternatively, open charm intermediate states have been proposed as the dominant mechanism underlying J/psi photoproduction. As the latter violates this factorization, it is important to estimate the relevance of such contributions. We analyse the latest differential and integrated photoproduction cross sections from the GlueX and Hall C experiments. We show that the data can be adequately described by a small number of partial waves, which we parameterize with generic models enforcing low-energy unitarity. The results suggest a non-negligible contribution from open charm intermediate states. Further | ||||
| Author(s) | Daniel Winney, Cesar Fernandez-Ramirez, Alessandro Pilloni  , Astrid Hiller Blin, Miguel Albaladejo, Lukasz Bibrzycki, Jinfeng Liao, Vincent Mathieu, Gloria Montana-Faiget , Robert Perry , Vanamali Shastry, Wyatt Smith, Adam Szczepaniak |
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| Publication Date | September 2023 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | UNAM, Mexico, Mexico | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | Nuclear Physics (NP), PHY-2209183, DE-SC0023598, DE-FG02-87ER40365 | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | No |
| Volume | 108 |
| Issue | |
| Page(s) | 054018 |
Attachments/Datasets/DOI Link
| Document(s) |
Pentaquark_Beam_Asymmetry (2).pdf
(STI Document)
PhysRevD.108.054018.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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