Lattice QCD investigation of a doubly-bottom (b)over-bar(b)over-barud tetraquark with quantum numbers I(J(P))=0(1(+))
AffiliationUniv Arizona, Dept Phys
MetadataShow full item record
PublisherAMER PHYSICAL SOC
CitationLeskovec, L., Meinel, S., Pflaumer, M., & Wagner, M. (2019). Lattice QCD investigation of a doubly-bottom (b)over-bar(b)over-barud tetraquark with quantum numbers I(J(P))=0(1(+)). Physical Review D, 100(1), 014503. https://doi.org/10.1103/PhysRevD.100.014503
JournalPHYSICAL REVIEW D
RightsPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
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AbstractWe use lattice QCD to investigate the spectrum of the (b) over bar(b) over bar ud 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 (b) over bar 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 Luscher 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) over bar(b) over bar ud tetraquark that is stable with respect to the strong and electromagnetic interactions.
NoteOpen access article
VersionFinal published version
SponsorsU.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC05-06OR23177]; U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-SC0009913]; RHIC Physics Fellow Program of the RIKEN BNL Research Center; Heisenberg Programme of the DFG (German Research Foundation) [WA3000/3-1]; Helmholtz International Center for FAIR; State Ministry of Higher Education, Research and the Arts; U.S. Department of Energy Office of Science User Facility [DE-AC02-05CH11231]; National Science Foundation [ACI-1548562]