Improved analysis of strong-interaction-stable doubly-bottom tetraquarks on the lattice
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866915008408977408 |
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| author | Colquhoun, B. Francis, A. Hudspith, R. J. Lewis, R. Maltman, K. Parrott, W. G. |
| author_facet | Colquhoun, B. Francis, A. Hudspith, R. J. Lewis, R. Maltman, K. Parrott, W. G. |
| contents | We update earlier lattice results for the binding energies of the flavor antitriplet of strong-interaction-stable doubly bottom, $J^P=1^+$ tetraquarks, employing an extended sink construction which produces significantly improved ground-state effective-mass plateaus, as well as new, larger-volume ensembles which reduce possible finite-volume effects at lighter pion masses. The updated bindings are $115(17)$ MeV for the $I=0$ member of the antitriplet and $47(8)$ MeV for its $I=1/2$ partner. We also provide an update of our earlier study of the variable heavy mass dependence of binding in the $1^+$ channel and new results on this dependence for binding in the $0^+$ channel, accessible when the two heavy quarks have unequal masses. Implications of these results of potential relevance to experimental searches for signals of the production of doubly bottom tetraquarks and/or a possible bottom-charm partner of the $T_{cc}$ are also discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_08816 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Improved analysis of strong-interaction-stable doubly-bottom tetraquarks on the lattice Colquhoun, B. Francis, A. Hudspith, R. J. Lewis, R. Maltman, K. Parrott, W. G. High Energy Physics - Lattice We update earlier lattice results for the binding energies of the flavor antitriplet of strong-interaction-stable doubly bottom, $J^P=1^+$ tetraquarks, employing an extended sink construction which produces significantly improved ground-state effective-mass plateaus, as well as new, larger-volume ensembles which reduce possible finite-volume effects at lighter pion masses. The updated bindings are $115(17)$ MeV for the $I=0$ member of the antitriplet and $47(8)$ MeV for its $I=1/2$ partner. We also provide an update of our earlier study of the variable heavy mass dependence of binding in the $1^+$ channel and new results on this dependence for binding in the $0^+$ channel, accessible when the two heavy quarks have unequal masses. Implications of these results of potential relevance to experimental searches for signals of the production of doubly bottom tetraquarks and/or a possible bottom-charm partner of the $T_{cc}$ are also discussed. |
| title | Improved analysis of strong-interaction-stable doubly-bottom tetraquarks on the lattice |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2407.08816 |