2025/02/06 by Nicolas Lang, David J. Wilson, Lang, Nicolas +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2502.04232
openalex publication_date 2025/02/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Isospin-1/2 charmed axial-vector D^*π-D^*η-D^*sK scattering amplitudes are computed, along with interactions in several other I=1/2 JP channels. Using lattice QCD, we work at a light-quark mass corresponding to mπ≈ 391 MeV, where the lowest three-hadron threshold (Dππ) lies high enough to enable a rigorous treatment of this system considering only two-hadron scattering channels. At this light-quark mass, an axial-vector D1 bound state is observed just below D^*π threshold, that is strongly coupled to D^*π in a relative S-wave and influences a wide energy region up to the D^*η threshold. An axial-vector D1^′ resonance is observed in the elastic D^*π energy-region, which is coupled more strongly to D-wave D^*π. A single narrow tensor state is seen in JP=2+ coupled to both Dπ and D^*π. In the region where D^*η and D^*sK are kinematically open, the available energy levels indicate significant S-wave interactions. Upon searching this region for poles, several possibilities exist with large uncertainties. One additional state consistently arises, predominantly coupled to the S-wave D^*π-D^*η-D^*sK amplitudes around the upper energy limit of this analysis.