Lattice QCD investigation of a doubly-bottom b̄b̄ud tetraquark with quantum numbers I(JP) = 0(1⁺)
- We use lattice QCD to investigate the spectrum of the ¯𝑏¯𝑏𝑢𝑑 four-quark system with quantum numbers 𝐼(𝐽𝑃)=0(1+). We use five different gauge-link ensembles with 2+1 flavors of domain-wall fermions, including one at the physical pion mass, and treat the heavy ¯𝑏 quark within the framework of lattice nonrelativistic QCD. Our work improves upon previous similar computations by considering in addition to local four-quark interpolators also nonlocal two-meson interpolators and by performing a Lüscher analysis to extrapolate our results to infinite volume. We obtain a binding energy of (−128±24±10) MeV, corresponding to the mass (10476±24±10) MeV, which confirms the existence of a ¯𝑏¯𝑏𝑢𝑑 tetraquark that is stable with respect to the strong and electromagnetic interactions.
| Author: | Luka LeskovecORCiD, Stefan MeinelORCiDGND, Martin PflaumerORCiDGND, Marc WagnerORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-846126 |
| DOI: | https://doi.org/10.1103/PhysRevD.100.014503 |
| ISSN: | 2470-0029 |
| ISSN: | 2470-0010 |
| ArXiv Id: | http://arxiv.org/abs/1904.04197 |
| Parent Title (English): | Physical review. D : covering particles, fields, gravitation, and cosmology |
| Publisher: | American Physical Society |
| Place of publication: | Ridge, NY |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2019/07/12 |
| Date of first Publication: | 2019/07/12 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2024/07/11 |
| Volume: | 100.2019 |
| Issue: | 1, 014503 |
| Article Number: | 014503 |
| Page Number: | 22 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
