I=2 π-π scattering length with dynamical overlap fermion

2011/08/15 by Takuya Yagi, Yagi, Takuya, S. Hashimoto +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1108.2970

openalex publication_date 2011/08/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report on a lattice QCD calculation of the I=2 ππ scattering length using the overlap fermion formulation for both sea and valence quarks. We investigate the consistency of the lattice data with the prediction of the next-to-next-to-leading order chiral perturbation theory after correcting finite volume effects. The calculation is performed on gauge ensembles of two-flavor QCD generated by the JLQCD collaboration on a 16³× 32 lattice at a lattice spacing ∼ 0.12 fm.

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