Publications
Publication Information
| Title | Lattice QCD investigation of a double-bottom \bar{b}\bar{b}ud tetraquark with quantum number I(J^P)=0(1^+) |
| Authors | Luka Leskovec, Stefan Meinel, Martin Pflaumer, Marc Wagner |
| JLAB number | JLAB-THY-19-2912 |
| LANL number | arXiv:1904.04197 |
| Other number | DOE/OR/23177-4667 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 100 Page(s) 014503 Refereed | |
| Publication Abstract: | We use lattice QCD to investigate the spectrum of the $\bar{b} \bar{b} u d$ four-quark system with quantum numbers $I(J^P) = 0(1^+)$. 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 $\bar{b}$ 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 L\"uscher analysis to extrapolate our results to infinite volume. We obtain a binding energy of $(-128 \pm 24 \pm 10) \, \textrm{MeV}$, corresponding to the mass $(10476 \pm 24 \pm 10) \, \textrm{MeV}$, which confirms the existence of a $\bar{b} \bar{b} u d$ tetraquark that is stable with respect to the strong and electromagnetic interactions. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.100.014503 |
| Accepted Manuscript: | PhysRevD.100.014503.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |