Highly excited and exotic meson spectrum from dynamical lattice QCD.
Using a new quark-field construction algorithm and a large variational basis of operators, we extract a highly excited isovector meson spectrum on dynamical anisotropic lattices. We show how carefully constructed operators can be used to reliably identify the continuum spin of extracted states, overcoming the reduced cubic symmetry of the lattice. Using this method we extract, with confidence, excited states, states with exotic quantum numbers (0+-, 1-+, and 2+-), and states of high spin, including, for the first time in lattice QCD, spin-four states.
Dudek
Jozef J
JJ
Jefferson Laboratory, 12000 Jefferson Avenue, Newport News, Virginia 23606, USA. dudek@jlab.org
Edwards
Robert G
RG
Peardon
Michael J
MJ
Richards
David G
DG
Thomas
Christopher E
CE