Effective range expansion for narrow near-threshold resonances
We discuss some general features of the effective range expansion, the content of its parameters with respect to the nature of the pertinent near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations and unstable constituents. As illustrative exampl...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322004245 |
| _version_ | 1811277400400461824 |
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| author | Vadim Baru Xiang-Kun Dong Meng-Lin Du Arseniy Filin Feng-Kun Guo Christoph Hanhart Alexey Nefediev Juan Nieves Qian Wang |
| author_facet | Vadim Baru Xiang-Kun Dong Meng-Lin Du Arseniy Filin Feng-Kun Guo Christoph Hanhart Alexey Nefediev Juan Nieves Qian Wang |
| author_sort | Vadim Baru |
| collection | DOAJ |
| description | We discuss some general features of the effective range expansion, the content of its parameters with respect to the nature of the pertinent near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations and unstable constituents. As illustrative examples, we analyse the properties of the χc1(3872) and Tcc+ states supporting the claim that these exotic states have a predominantly molecular nature. |
| first_indexed | 2024-04-13T00:16:03Z |
| format | Article |
| id | doaj.art-ad4ae23edaa94875bf18f4d03e067c03 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-13T00:16:03Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-ad4ae23edaa94875bf18f4d03e067c032022-12-22T03:10:56ZengElsevierPhysics Letters B0370-26932022-10-01833137290Effective range expansion for narrow near-threshold resonancesVadim Baru0Xiang-Kun Dong1Meng-Lin Du2Arseniy Filin3Feng-Kun Guo4Christoph Hanhart5Alexey Nefediev6Juan Nieves7Qian Wang8Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany; Corresponding author.CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Zhong Guan Cun East Street 55, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaInstituto de Física Corpuscular (centro mixto CSIC-UV), Institutos de Investigación de Paterna, C/Catedrático José Beltrán 2, E-46980 Paterna, Valencia, SpainInstitut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, GermanyCAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Zhong Guan Cun East Street 55, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaInstitute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, GermanyJozef Stefan Institute, Jamova 39, 1000, Ljubljana, SloveniaInstituto de Física Corpuscular (centro mixto CSIC-UV), Institutos de Investigación de Paterna, C/Catedrático José Beltrán 2, E-46980 Paterna, Valencia, SpainGuangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Southern Nuclear Science Computing Center, South China Normal University, Guangzhou 510006, ChinaWe discuss some general features of the effective range expansion, the content of its parameters with respect to the nature of the pertinent near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations and unstable constituents. As illustrative examples, we analyse the properties of the χc1(3872) and Tcc+ states supporting the claim that these exotic states have a predominantly molecular nature.http://www.sciencedirect.com/science/article/pii/S0370269322004245Effective range expansionExotic statesTetraquarksHadronic molecules |
| spellingShingle | Vadim Baru Xiang-Kun Dong Meng-Lin Du Arseniy Filin Feng-Kun Guo Christoph Hanhart Alexey Nefediev Juan Nieves Qian Wang Effective range expansion for narrow near-threshold resonances Physics Letters B Effective range expansion Exotic states Tetraquarks Hadronic molecules |
| title | Effective range expansion for narrow near-threshold resonances |
| title_full | Effective range expansion for narrow near-threshold resonances |
| title_fullStr | Effective range expansion for narrow near-threshold resonances |
| title_full_unstemmed | Effective range expansion for narrow near-threshold resonances |
| title_short | Effective range expansion for narrow near-threshold resonances |
| title_sort | effective range expansion for narrow near threshold resonances |
| topic | Effective range expansion Exotic states Tetraquarks Hadronic molecules |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322004245 |
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