2018/09/30 by Xiao-Yu Guo, Yonggoo Heo, Matthias F. M. Lutz
Physics and Astronomy · #Chiral perturbation theory #Flavour #High-Energy Particle Collisions Research #Invariant mass #Lattice (music) #Lattice QCD #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quantum number #Quark #hep-ph
paper · pdf · doi:10.1016/j.physletb.2019.02.022
14 pages, three figures - published version
arxiv created 2019/02/20 · openalex publication_date 2019/02/21 · arxiv updated 2019/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the flavour sextet of charmed meson resonances with JP=1+ quantum numbers that is predicted by the leading order chiral Lagrangian with up, down and strange quarks. The effect of chiral correction terms as determined previously from QCD lattice data is worked out. Pole masses in the complex energy plane are derived. The most promising signal from such states accessible in experiments like Belle, LHCb and PANDA is foreseen in the s-wave πD⁎ phase shift and the ηD⁎ invariant mass distribution. For physical quark masses a rapid variation of the phase shift in-between the ηD⁎ and the K¯Ds⁎ thresholds is predicted.