6533b85dfe1ef96bd12bf293

RESEARCH PRODUCT

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

Andrew HanlonDaniel DarvishRuairí BrettColin MorningstarBen HörzJacob FallicaJohn Bulava

subject

PhysicsQuantum chromodynamicsParticle physicsBasis (linear algebra)High Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Spectrum (functional analysis)HadronHigh Energy Physics::PhenomenologyFOS: Physical sciencesLattice QCDApproxHigh Energy Physics - LatticeTetraquarkHigh Energy Physics::ExperimentScalar meson

description

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.

yearjournalcountryeditionlanguage
2019-09-17
10.1063/5.0008966http://arxiv.org/abs/1909.07747