Cargando…
Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks
On 26 March 2019, at the Rencontres de Moriond QCD conference, the LHCb Collaboration reported the observation of three new pentaquarks, namely Pc(4312), Pc(4440), and Pc(4457), which are consistent with the loosely bound molecular hidden-charm pentaquark states composed of an S-wave charmed baryon...
| Autores principales: | , , , |
|---|---|
| Lenguaje: | eng |
| Publicado: |
2019
|
| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.100.011502 http://cds.cern.ch/record/2759241 |
| _version_ | 1780970209822113792 |
|---|---|
| author | Chen, Rui Sun, Zhi-Feng Liu, Xiang Zhu, Shi-Lin |
| author_facet | Chen, Rui Sun, Zhi-Feng Liu, Xiang Zhu, Shi-Lin |
| author_sort | Chen, Rui |
| collection | CERN |
| description | On 26 March 2019, at the Rencontres de Moriond QCD conference, the LHCb Collaboration reported the observation of three new pentaquarks, namely Pc(4312), Pc(4440), and Pc(4457), which are consistent with the loosely bound molecular hidden-charm pentaquark states composed of an S-wave charmed baryon Σc and an S-wave anticharmed meson (D¯, D¯*). In this work, we present a direct calculation by the one-boson-exchange model and demonstrate explicitly that the Pc(4312), Pc(4440), and Pc(4457) do correspond to the loosely bound ΣcD¯ with (I=1/2, JP=1/2-), ΣcD¯* with (I=1/2, JP=1/2-), and ΣcD¯* with (I=1/2, JP=3/2-), respectively. |
| id | cern-2759241 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2019 |
| record_format | invenio |
| spelling | cern-27592412021-11-23T03:07:48Zdoi:10.1103/PhysRevD.100.011502http://cds.cern.ch/record/2759241engChen, RuiSun, Zhi-FengLiu, XiangZhu, Shi-LinStrong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarksnucl-thNuclear Physics - Theoryhep-latParticle Physics - Latticehep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyOn 26 March 2019, at the Rencontres de Moriond QCD conference, the LHCb Collaboration reported the observation of three new pentaquarks, namely Pc(4312), Pc(4440), and Pc(4457), which are consistent with the loosely bound molecular hidden-charm pentaquark states composed of an S-wave charmed baryon Σc and an S-wave anticharmed meson (D¯, D¯*). In this work, we present a direct calculation by the one-boson-exchange model and demonstrate explicitly that the Pc(4312), Pc(4440), and Pc(4457) do correspond to the loosely bound ΣcD¯ with (I=1/2, JP=1/2-), ΣcD¯* with (I=1/2, JP=1/2-), and ΣcD¯* with (I=1/2, JP=3/2-), respectively.On March 26th, 2019, at the Rencontres de Moriond QCD conference, the LHCb Collaboration reported the observation of three new pentaquarks, namely $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$, which are consistent with the loosely bound molecular hidden-charm pentaquark states composed of an S-wave charmed baryon $\Sigma_c$ and an S-wave anti-charmed meson ($\bar{D}, \bar{D}^*$). In this work, we present a direct calculation by the one-boson-exchange (OBE) model and demonstrate explicitly that the $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$ do correspond to the loosely bound $\Sigma_c\bar{D}$ with $(I=1/2,J^P=1/2^-)$, $\Sigma_c\bar{D}^*$ with $(I=1/2,J^P=1/2^-)$ and $\Sigma_c\bar{D}^*$ with $(I=1/2,J^P=3/2^-)$, respectively.arXiv:1903.11013oai:cds.cern.ch:27592412019-03-26 |
| spellingShingle | nucl-th Nuclear Physics - Theory hep-lat Particle Physics - Lattice hep-ex Particle Physics - Experiment hep-ph Particle Physics - Phenomenology Chen, Rui Sun, Zhi-Feng Liu, Xiang Zhu, Shi-Lin Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| title | Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| title_full | Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| title_fullStr | Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| title_full_unstemmed | Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| title_short | Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| title_sort | strong lhcb evidence supporting the existence of the hidden-charm molecular pentaquarks |
| topic | nucl-th Nuclear Physics - Theory hep-lat Particle Physics - Lattice hep-ex Particle Physics - Experiment hep-ph Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1103/PhysRevD.100.011502 http://cds.cern.ch/record/2759241 |
| work_keys_str_mv | AT chenrui stronglhcbevidencesupportingtheexistenceofthehiddencharmmolecularpentaquarks AT sunzhifeng stronglhcbevidencesupportingtheexistenceofthehiddencharmmolecularpentaquarks AT liuxiang stronglhcbevidencesupportingtheexistenceofthehiddencharmmolecularpentaquarks AT zhushilin stronglhcbevidencesupportingtheexistenceofthehiddencharmmolecularpentaquarks |