Kπ scattering and excited meson spectroscopy using the stochastic LapH method

2018/10/26 by Ruairí Brett, John Bulava, Brett, Ruairí +9
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1810.11311

openalex publication_date 2018/10/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Elastic I=1/2, s- and p-wave Kπ scattering amplitudes are simultaneously calculated using a Lüscher style analysis on a single ensemble of dynamical Wilson-clover fermions at m_π∼ 230 MeV. Partial wave mixing due to the reduced rotational symmetries of the finite volume is included up to ℓ=2. We also present finite-volume QCD spectra on two large anisotropic lattices (32³ × 256, 24³ × 128) with m_π∼ 230, 390 MeV respectively. In each symmetry channel, a large basis of one- and two-hadron interpolating operators is employed with all-to-all quark propagation treated using the stochastic LapH method.

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