Perturbative QCD Evidence for Spin-2 Particles in the Di-$J/ψ$ Resonances
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2020
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| _version_ | 1866909613227507712 |
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| author | Zhang, Hong-Fei Ma, Yan-Qing Sang, Wen-Long |
| author_facet | Zhang, Hong-Fei Ma, Yan-Qing Sang, Wen-Long |
| contents | We extend the nonrelativistic QCD framework to explore the nature of the newly discovered di-$J/ψ$ resonances. Assuming them as either molecule-like states or tetraquarks, we calculated their hadroproduction cross sections at the LHC. We find that the observed resonances are most likely spin-2 particles, and there should exist their spin-0 counterparts near these resonances. The ratio of production cross sections of the observed resonances to the latent spin-0 ones are also presented, which might help to distinguish molecule-like states from tetraquarks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2009_08376 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Perturbative QCD Evidence for Spin-2 Particles in the Di-$J/ψ$ Resonances Zhang, Hong-Fei Ma, Yan-Qing Sang, Wen-Long High Energy Physics - Phenomenology High Energy Physics - Experiment We extend the nonrelativistic QCD framework to explore the nature of the newly discovered di-$J/ψ$ resonances. Assuming them as either molecule-like states or tetraquarks, we calculated their hadroproduction cross sections at the LHC. We find that the observed resonances are most likely spin-2 particles, and there should exist their spin-0 counterparts near these resonances. The ratio of production cross sections of the observed resonances to the latent spin-0 ones are also presented, which might help to distinguish molecule-like states from tetraquarks. |
| title | Perturbative QCD Evidence for Spin-2 Particles in the Di-$J/ψ$ Resonances |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2009.08376 |