A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model
Abstract We analyze the hidden charm P-wave tetraquarks in the diquark model, using an effective Hamiltonian incorporating the dominant spin–spin, spin–orbit and tensor interactions. We compare with other P-wave systems such as P-wave charmonia and the newly discovered $$\Omega _c$$ Ωc baryons, anal...
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SpringerOpen
2018-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-5501-6 |
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doaj-ff8ba05a7f6c44f9b033d309f2bc7c612020-11-25T00:27:03ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-01-0178111310.1140/epjc/s10052-017-5501-6A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark modelAhmed Ali0Luciano Maiani1Anatoly V. Borisov2Ishtiaq Ahmed3M. Jamil Aslam4Alexander Ya. Parkhomenko5Antonio D. Polosa6Abdur Rehman7Deutsches Elektronen-Synchrotron DESYTheory Division, CERNFaculty of Physics, M. V. Lomonosov Moscow State UniversityNational Centre for Physics, Quaid-i-Azam University CampusDepartment of Physics, Quaid-i-Azam UniversityDepartment of Theoretical Physics, P. G. Demidov Yaroslavl State UniversityDipartimento di Fisica, INFN, Sapienza Universita di RomaNational Centre for Physics, Quaid-i-Azam University CampusAbstract We analyze the hidden charm P-wave tetraquarks in the diquark model, using an effective Hamiltonian incorporating the dominant spin–spin, spin–orbit and tensor interactions. We compare with other P-wave systems such as P-wave charmonia and the newly discovered $$\Omega _c$$ Ωc baryons, analysed recently in this framework. Given the uncertain experimental situation on the Y states, we allow for different spectra and discuss the related parameters in the diquark model. In addition to the presently observed ones, we expect many more states in the supermultiplet of $$L=1$$ L=1 diquarkonia, whose $$J^{PC}$$ JPC quantum numbers and masses are worked out, using the parameters from the currently preferred Y-states pattern. The existence of these new resonances would be a decisive footprint of the underlying diquark dynamics.http://link.springer.com/article/10.1140/epjc/s10052-017-5501-6 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Ahmed Ali Luciano Maiani Anatoly V. Borisov Ishtiaq Ahmed M. Jamil Aslam Alexander Ya. Parkhomenko Antonio D. Polosa Abdur Rehman |
| spellingShingle |
Ahmed Ali Luciano Maiani Anatoly V. Borisov Ishtiaq Ahmed M. Jamil Aslam Alexander Ya. Parkhomenko Antonio D. Polosa Abdur Rehman A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model European Physical Journal C: Particles and Fields |
| author_facet |
Ahmed Ali Luciano Maiani Anatoly V. Borisov Ishtiaq Ahmed M. Jamil Aslam Alexander Ya. Parkhomenko Antonio D. Polosa Abdur Rehman |
| author_sort |
Ahmed Ali |
| title |
A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model |
| title_short |
A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model |
| title_full |
A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model |
| title_fullStr |
A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model |
| title_full_unstemmed |
A new look at the Y tetraquarks and $$\Omega _c$$ Ωc baryons in the diquark model |
| title_sort |
new look at the y tetraquarks and $$\omega _c$$ ωc baryons in the diquark model |
| publisher |
SpringerOpen |
| series |
European Physical Journal C: Particles and Fields |
| issn |
1434-6044 1434-6052 |
| publishDate |
2018-01-01 |
| description |
Abstract We analyze the hidden charm P-wave tetraquarks in the diquark model, using an effective Hamiltonian incorporating the dominant spin–spin, spin–orbit and tensor interactions. We compare with other P-wave systems such as P-wave charmonia and the newly discovered $$\Omega _c$$ Ωc baryons, analysed recently in this framework. Given the uncertain experimental situation on the Y states, we allow for different spectra and discuss the related parameters in the diquark model. In addition to the presently observed ones, we expect many more states in the supermultiplet of $$L=1$$ L=1 diquarkonia, whose $$J^{PC}$$ JPC quantum numbers and masses are worked out, using the parameters from the currently preferred Y-states pattern. The existence of these new resonances would be a decisive footprint of the underlying diquark dynamics. |
| url |
http://link.springer.com/article/10.1140/epjc/s10052-017-5501-6 |
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