Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules
Abstract The possibility for a common effective field theory for hadronic molecules with different heavy-quark flavours is examined critically. It is argued that such a theory does not allow one to draw definite conclusions for doubly heavy molecules. In particular, it does not allow one to relate b...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-6560-7 |
| _version_ | 1818504685633404928 |
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| author | V. Baru E. Epelbaum J. Gegelia C. Hanhart U.-G. Meißner A. V. Nefediev |
| author_facet | V. Baru E. Epelbaum J. Gegelia C. Hanhart U.-G. Meißner A. V. Nefediev |
| author_sort | V. Baru |
| collection | DOAJ |
| description | Abstract The possibility for a common effective field theory for hadronic molecules with different heavy-quark flavours is examined critically. It is argued that such a theory does not allow one to draw definite conclusions for doubly heavy molecules. In particular, it does not allow one to relate binding energies for the molecules in the c-quark and b-quark sectors with controlled uncertainties. Therefore, while this kind of reasoning does not preclude from employing heavy-quark spin symmetry for charmonium- and bottomonium-like states separately within a well established effective field theory framework, relations between different heavy-quark sectors can only be obtained using phenomenological approaches with uncontrolled uncertainties. |
| first_indexed | 2024-12-10T21:40:28Z |
| format | Article |
| id | doaj.art-1a6223768eb84b7bad27a0b77c04bb2d |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-10T21:40:28Z |
| publishDate | 2019-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-1a6223768eb84b7bad27a0b77c04bb2d2022-12-22T01:32:31ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-01-017911710.1140/epjc/s10052-019-6560-7Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic moleculesV. Baru0E. Epelbaum1J. Gegelia2C. Hanhart3U.-G. Meißner4A. V. Nefediev5Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität BonnInstitut für Theoretische Physik II, Ruhr-Universität BochumForschungszentrum Jülich, Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron PhysicsForschungszentrum Jülich, Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron PhysicsHelmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität BonnP.N. Lebedev Physical Institute of the Russian Academy of SciencesAbstract The possibility for a common effective field theory for hadronic molecules with different heavy-quark flavours is examined critically. It is argued that such a theory does not allow one to draw definite conclusions for doubly heavy molecules. In particular, it does not allow one to relate binding energies for the molecules in the c-quark and b-quark sectors with controlled uncertainties. Therefore, while this kind of reasoning does not preclude from employing heavy-quark spin symmetry for charmonium- and bottomonium-like states separately within a well established effective field theory framework, relations between different heavy-quark sectors can only be obtained using phenomenological approaches with uncontrolled uncertainties.http://link.springer.com/article/10.1140/epjc/s10052-019-6560-7 |
| spellingShingle | V. Baru E. Epelbaum J. Gegelia C. Hanhart U.-G. Meißner A. V. Nefediev Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules European Physical Journal C: Particles and Fields |
| title | Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules |
| title_full | Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules |
| title_fullStr | Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules |
| title_full_unstemmed | Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules |
| title_short | Remarks on the heavy-quark flavour symmetry for doubly heavy hadronic molecules |
| title_sort | remarks on the heavy quark flavour symmetry for doubly heavy hadronic molecules |
| url | http://link.springer.com/article/10.1140/epjc/s10052-019-6560-7 |
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