STI Publications - View Publication Form #16454
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Publication Information
| Title | Precision dispersive approaches versus unitarized Chiral Perturbation Theory for the lightest scalar resonances $\sigma$ and $\kappa$. | ||||
| Abstract | For several decades, the \sig and \kap resonances have been subject to long-standing debate. Both their existence and properties were in controversy until very recently. In this mini-review we compare model-independent dispersive and analytic techniques versus unitarized Chiral Perturbation Theory when applied to the lightest scalar mesons $\sig$ and $\kap$. Generically, the former have settled the long-standing controversy about the existence of these states, providing a precise determination of their parameters, whereas unitarization of chiral effective theories allow us to understand their nature, spectroscopic classification and dependence on QCD parameters. Here we review in a pedagogical way their uses, advantages and caveats. | ||||
| Author(s) | José Ramón Peláez, Arkaitz Rodas, J. Ruiz de Elvira | ||||
| Publication Date | June 2021 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | The College of William and Mary, Williamsburg, VA | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| 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 | European Physical Journal Special Topics |
| Refereed | Yes |
| Volume | 2021 |
| Issue | |
| Page(s) |
Attachments/Datasets/DOI Link
| Document(s) |
EPJST_Review1.pdf
(STI Document)
2101.06506.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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