Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCD

Daniel Darvish; Ruairí Brett; John Bulava; Jacob Fallica; Andrew Hanlon; Ben Hörz; Colin Morningstar

doi:10.1063/5.0008966

Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCD

High Energy Physics - Lattice 2020-08-26 v1

Authors: Daniel Darvish , Ruairí Brett , John Bulava , Jacob Fallica , Andrew Hanlon , Ben Hörz , Colin Morningstar

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Abstract

Lattice QCD allows us to probe the low-lying hadron spectrum in finite-volume using a basis of single- and multi-hadron interpolating operators. Here we examine the effect of including tetraquark operators on the spectrum in the scalar meson sectors containing the $K_0^*(700)$ ( $\kappa$ ) and the $a_0(980)$ in $N_f = 2 + 1$ QCD, with $m_\pi \approx 230$ MeV. Preliminary results of additional finite-volume states found using tetraquark operators are shown, and possible implications of these states are discussed.

Keywords

lattice qcd tetraquark operators scalar mesons hadron spectrum finite-volume states

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@article{arxiv.1909.07747,
  title  = {Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCD},
  author = {Daniel Darvish and Ruairí Brett and John Bulava and Jacob Fallica and Andrew Hanlon and Ben Hörz and Colin Morningstar},
  journal= {arXiv preprint arXiv:1909.07747},
  year   = {2020}
}

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6 pages, 4 figures, proceedings for The 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU-2019

Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCD

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