• DOI:10.1103/PhysRevD.96.054510
• Corpus ID: 119192938

u d b ¯ b ¯ tetraquark resonances with lattice QCD potentials and the Born-Oppenheimer approximation

@article{Bicudo2017uDB,
  title={u d b ¯ b ¯ tetraquark resonances with lattice QCD potentials and the Born-Oppenheimer approximation},
  author={Pedro Bicudo and M arco Cardoso and Antje Peters and Martin Pflaumer and Marc Wagner},
  journal={Physical Review D},
  year={2017},
  volume={96},
  pages={054510}
}

• P. Bicudo, M. Cardoso, +2 authors M. Wagner
• Published 7 April 2017
• Physics
• Physical Review D

We study tetraquark resonances with lattice QCD potentials computed for a static bbar bbar pair in the presence of two lighter quarks u d, the Born-Oppenheimer approximation and the emergent wave method. As a proof of concept we focus on the system with isospin I = 0, but consider different relative angular momenta l of the heavy quarks bbar bbar. For l=0 a bound state has already been predicted with quantum numbers I(JP) = 0(1+). Exploring various angular momenta we now compute the phase shifts and search for S and T matrix poles in the second Riemann sheet. We predict a tetraquark resonance for l =1, decaying into two B mesons, with quantum numbers I(JP) = 0(1-), mass m = 10 \, 576^{+4}_{-4} MeV} and decay width Gamma = 112^{+90}_{-103} MeV.