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Highly excited and exotic meson spectrum from dynamical lattice QCD

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arxiv 0909.0200 v2 pith:S3VLETAG submitted 2009-09-01 hep-ph hep-lat

Highly excited and exotic meson spectrum from dynamical lattice QCD

Jozef J. Dudek , Robert G. Edwards , Michael J. Peardon , David G. Richards , Christopher E. Thomas This is my paper
classification hep-ph hep-lat
keywords statesexcitedlatticedynamicalexoticextracthighlymeson
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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  1. $D_1$ and $D_2$ resonances in coupled-channel scattering amplitudes from lattice QCD

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    Lattice QCD at m_π≈391 MeV finds D1 bound state below D*π threshold strongly coupled in S-wave and D1' resonance in elastic D*π region for I=1/2 charmed channels.