@article{550fcf581a444035a9d5e5e8a28284ab,
title = "Lattice QCD investigation of a doubly-bottom b b ud tetraquark with quantum numbers i (JP)=0 (1+) LATTICE QCD INVESTIGATION of A DOUBLY-BOTTOM b b ud ... LUKA LESKOVEC et al.",
abstract = "We use lattice QCD to investigate the spectrum of the bbud 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 L{\"u}scher 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 bbud tetraquark that is stable with respect to the strong and electromagnetic interactions.",
author = "Luka Leskovec and Stefan Meinel and Martin Pflaumer and Marc Wagner",
note = "Funding Information: We thank Antje Peters for collaboration in the early stages of this project, and we thank the RBC and UKQCD collaborations for providing the gauge-field ensembles. L. L. is supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contract No. DE-AC05-06OR23177. S. M. is supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award No. DE-SC0009913, and by the RHIC Physics Fellow Program of the RIKEN BNL Research Center. M. W. acknowledges support by the Heisenberg Programme of the DFG (German Research Foundation), Grant No. WA3000/3-1. This work was supported in part by the Helmholtz International Center for FAIR within the framework of the LOEWE program launched by the State of Hesse. Calculations on the LOEWE-CSC and on the on the FUCHS-CSC high-performance computer of the Frankfurt University were conducted for this research. We would like to thank HPC-Hessen, funded by the State Ministry of Higher Education, Research and the Arts, for programming advice. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. This work also used resources at the Texas Advanced Computing Center that are part of the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. ACI-1548562. Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society.",
year = "2019",
month = jul,
day = "12",
doi = "10.1103/PhysRevD.100.014503",
language = "English (US)",
volume = "100",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "1",
}