Some results on excited hadrons in 2-flavor QCD

Understand

Results of hadron spectroscopy with two dynamical mass-degenerate chirally improved quarks are presented.

• Three ensembles with pion masses of 322(5), 470(4) and 525(7) MeV, lattices of size 16^3 \times 32, and lattice spacings close to 0.15 fm are investigated.
• We discuss the possible appearance of scattering states, considering masses and eigenvectors.
• Partially quenched results in the scalar channel suggest the presence of a 2-particle state, however, in most channels we cannot identify them.