Pentaquark molecular states with hidden bottom and double strangeness
Abstract We investigate the meson-baryon interaction in coupled channels with the quantum numbers of the pentaquarks $$P_{bss}$$ P bss and $$P_{bsss}$$ P bsss . The interaction is derived from an extension of the local hidden gauge approach to the heavy quark sector, which has demonstrated accurate...
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| Language: | English |
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SpringerOpen
2024-10-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13435-9 |
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| author | Jing Song Man-Yu Duan Luis Roca Eulogio Oset |
| author_facet | Jing Song Man-Yu Duan Luis Roca Eulogio Oset |
| author_sort | Jing Song |
| collection | DOAJ |
| description | Abstract We investigate the meson-baryon interaction in coupled channels with the quantum numbers of the pentaquarks $$P_{bss}$$ P bss and $$P_{bsss}$$ P bsss . The interaction is derived from an extension of the local hidden gauge approach to the heavy quark sector, which has demonstrated accurate results compared to experiments involving $$\Omega _{b}$$ Ω b , $$\Xi _{b}$$ Ξ b states, and pentaquarks $$P_{c}$$ P c and $$P_{cs}$$ P cs . In our study, we identify several molecular states with small decay widths within the chosen set of coupled channels. The spin-parity ( $$J^P$$ J P ) of these states is as follows: $$J^P={\frac{1}{2}}^-$$ J P = 1 2 - for pseudoscalar-baryon ( $${\frac{1}{2}}^+$$ 1 2 + ) coupled channels, $$J^P={\frac{3}{2}}^-$$ J P = 3 2 - for pseudoscalar-baryon ( $${\frac{3}{2}}^+$$ 3 2 + ) coupled channels, $$J^P={\frac{1}{2}}^-$$ J P = 1 2 - and $${\frac{3}{2}}^-$$ 3 2 - for vector-baryon ( $${\frac{1}{2}}^+$$ 1 2 + ) coupled channels, and $$J^P={\frac{1}{2}}^-$$ J P = 1 2 - , $${\frac{3}{2}}^-$$ 3 2 - , $${\frac{5}{2}}^-$$ 5 2 - for vector-baryon ( $${\frac{3}{2}}^+$$ 3 2 + ) coupled channels. We search for the poles of these states and evaluate their couplings to the different channels. |
| format | Article |
| id | doaj-art-e16a6fa6ff7645c2b9b0bab6641fd9db |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-e16a6fa6ff7645c2b9b0bab6641fd9db2024-12-08T12:43:05ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-10-0184101810.1140/epjc/s10052-024-13435-9Pentaquark molecular states with hidden bottom and double strangenessJing Song0Man-Yu Duan1Luis Roca2Eulogio Oset3School of Physics, Beihang UniversityDepartamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de PaternaDepartamento de Física, Universidad de MurciaDepartamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de PaternaAbstract We investigate the meson-baryon interaction in coupled channels with the quantum numbers of the pentaquarks $$P_{bss}$$ P bss and $$P_{bsss}$$ P bsss . The interaction is derived from an extension of the local hidden gauge approach to the heavy quark sector, which has demonstrated accurate results compared to experiments involving $$\Omega _{b}$$ Ω b , $$\Xi _{b}$$ Ξ b states, and pentaquarks $$P_{c}$$ P c and $$P_{cs}$$ P cs . In our study, we identify several molecular states with small decay widths within the chosen set of coupled channels. The spin-parity ( $$J^P$$ J P ) of these states is as follows: $$J^P={\frac{1}{2}}^-$$ J P = 1 2 - for pseudoscalar-baryon ( $${\frac{1}{2}}^+$$ 1 2 + ) coupled channels, $$J^P={\frac{3}{2}}^-$$ J P = 3 2 - for pseudoscalar-baryon ( $${\frac{3}{2}}^+$$ 3 2 + ) coupled channels, $$J^P={\frac{1}{2}}^-$$ J P = 1 2 - and $${\frac{3}{2}}^-$$ 3 2 - for vector-baryon ( $${\frac{1}{2}}^+$$ 1 2 + ) coupled channels, and $$J^P={\frac{1}{2}}^-$$ J P = 1 2 - , $${\frac{3}{2}}^-$$ 3 2 - , $${\frac{5}{2}}^-$$ 5 2 - for vector-baryon ( $${\frac{3}{2}}^+$$ 3 2 + ) coupled channels. We search for the poles of these states and evaluate their couplings to the different channels.https://doi.org/10.1140/epjc/s10052-024-13435-9 |
| spellingShingle | Jing Song Man-Yu Duan Luis Roca Eulogio Oset Pentaquark molecular states with hidden bottom and double strangeness European Physical Journal C: Particles and Fields |
| title | Pentaquark molecular states with hidden bottom and double strangeness |
| title_full | Pentaquark molecular states with hidden bottom and double strangeness |
| title_fullStr | Pentaquark molecular states with hidden bottom and double strangeness |
| title_full_unstemmed | Pentaquark molecular states with hidden bottom and double strangeness |
| title_short | Pentaquark molecular states with hidden bottom and double strangeness |
| title_sort | pentaquark molecular states with hidden bottom and double strangeness |
| url | https://doi.org/10.1140/epjc/s10052-024-13435-9 |
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