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Excited-state energies and scattering phase shifts from lattice QCD with the stochastic LapH method

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arxiv 1510.00371 v1 pith:BBHIL3GB submitted 2015-10-01 hep-lat

Colin Morningstar , John Bulava , Brendan Fahy , Jacob Fallica , Andrew Hanlon , Ben Hoerz , Keisuke Juge , Chik Him Wong This is my paper · ORCID
classification hep-lat
keywords energiesexcited-statelargelatticemethodoperatorsphasescattering
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Recent results in computing excited-state energies and meson-meson scattering phase shifts in lattice QCD are presented. A stochastic method of treating the low-lying modes of quark propagation that exploits Laplacian Heaviside quark-field smearing makes such studies possible now on large 32^3 x 256 and 48^3 x 128 lattices at near physical pion masses. Levels are identified using a variety of probe interpolating operators, which include both single-hadron and a large number of two-hadron operators.

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  1. Lattice perspectives on doubly heavy tetraquarks

    hep-lat 2025-02 accept novelty 1.0 of 10

    A review of lattice QCD results concludes that doubly heavy tetraquarks Tbb(ud/us) are firmly predicted as bound states, Tcc appears as a virtual state at nonphysical masses, and Tbc is under active study.

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