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arXiv · 1909.07747

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
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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.

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Daniel Darvish, Ruairí Brett, John Bulava, Jacob Fallica, Andrew Hanlon, Ben Hörz, Colin Morningstar. 2019-09-17. Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCD. https://doi.org/10.1063/5.0008966

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