Particle-dimer approach for the Roper resonance in a finite volume
Abstract We propose a new finite-volume approach which implements two- and three-body dynamics in a transparent way based on an Effective Field Theory Lagrangian. The formalism utilizes a particle-dimer picture and formulates the quantization conditions based on the self-energy of the decaying parti...
| 出版年: | Journal of High Energy Physics |
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| 主要な著者: | , , |
| フォーマット: | 論文 |
| 言語: | 英語 |
| 出版事項: |
SpringerOpen
2023-04-01
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| 主題: | |
| オンライン･アクセス: | https://doi.org/10.1007/JHEP04(2023)100 |
| _version_ | 1851834957681393664 |
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| author | Daniel Severt Maxim Mai Ulf-G. Meißner |
| author_facet | Daniel Severt Maxim Mai Ulf-G. Meißner |
| author_sort | Daniel Severt |
| collection | DOAJ |
| container_title | Journal of High Energy Physics |
| description | Abstract We propose a new finite-volume approach which implements two- and three-body dynamics in a transparent way based on an Effective Field Theory Lagrangian. The formalism utilizes a particle-dimer picture and formulates the quantization conditions based on the self-energy of the decaying particle. The formalism is studied for the case of the Roper resonance, using input from lattice QCD and phenomenology. Finally, finite-volume energy eigenvalues are predicted and compared to existing results of lattice QCD calculations. This crucially provides initial guidance on the necessary level of precision for the finite-volume spectrum. |
| format | Article |
| id | doaj-art-e2d4f715734643d8a5ef7bc29b9e33f5 |
| institution | Directory of Open Access Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2023-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| spelling | doaj-art-e2d4f715734643d8a5ef7bc29b9e33f52025-08-19T22:30:46ZengSpringerOpenJournal of High Energy Physics1029-84792023-04-012023413710.1007/JHEP04(2023)100Particle-dimer approach for the Roper resonance in a finite volumeDaniel Severt0Maxim Mai1Ulf-G. Meißner2Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität BonnHelmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität BonnHelmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität BonnAbstract We propose a new finite-volume approach which implements two- and three-body dynamics in a transparent way based on an Effective Field Theory Lagrangian. The formalism utilizes a particle-dimer picture and formulates the quantization conditions based on the self-energy of the decaying particle. The formalism is studied for the case of the Roper resonance, using input from lattice QCD and phenomenology. Finally, finite-volume energy eigenvalues are predicted and compared to existing results of lattice QCD calculations. This crucially provides initial guidance on the necessary level of precision for the finite-volume spectrum.https://doi.org/10.1007/JHEP04(2023)100Hadronic SpectroscopyStructure and InteractionsEffective Field Theories of QCDProperties of Hadrons |
| spellingShingle | Daniel Severt Maxim Mai Ulf-G. Meißner Particle-dimer approach for the Roper resonance in a finite volume Hadronic Spectroscopy Structure and Interactions Effective Field Theories of QCD Properties of Hadrons |
| title | Particle-dimer approach for the Roper resonance in a finite volume |
| title_full | Particle-dimer approach for the Roper resonance in a finite volume |
| title_fullStr | Particle-dimer approach for the Roper resonance in a finite volume |
| title_full_unstemmed | Particle-dimer approach for the Roper resonance in a finite volume |
| title_short | Particle-dimer approach for the Roper resonance in a finite volume |
| title_sort | particle dimer approach for the roper resonance in a finite volume |
| topic | Hadronic Spectroscopy Structure and Interactions Effective Field Theories of QCD Properties of Hadrons |
| url | https://doi.org/10.1007/JHEP04(2023)100 |
| work_keys_str_mv | AT danielsevert particledimerapproachfortheroperresonanceinafinitevolume AT maximmai particledimerapproachfortheroperresonanceinafinitevolume AT ulfgmeißner particledimerapproachfortheroperresonanceinafinitevolume |