Chiral extrapolations of the ρ(770) meson in Nf=2+1 lattice QCD simulations

2017/04/30 by B. Hu, Bin‐Jie Hu, R. Molina +5
Mathematics · Physics and Astronomy · #Amplitude #Chiral perturbation theory #Geometry #Hadron #High-Energy Particle Collisions Research #Inverse #Isospin #Lattice (music) #Lattice QCD #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #hep-lat #nucl-th

paper · pdf · doi:10.1103/physrevd.96.034520

published as Phys. Rev. D 96, 034520 (2017) · 13 pages, 10 figures

openalex created_date 2017/05/05 · arxiv created 2017/07/25 · openalex publication_date 2017/08/24 · arxiv updated 2017/08/30 · openalex updated_date 2026/08/05

Abstract

Recent N_f=2+1 lattice data for meson-meson scattering in the p-wave and with isospin I=1 are analyzed using a unitarized model inspired by chiral perturbation theory in the inverse-amplitude formulation for two and three flavors. Chiral extrapolations are performed that postdict phase shifts extracted from experiment quite well. In addition, the low-energy constants are compared to the ones from a recent analysis of N_f=2 lattice QCD simulations to check for the consistency of the hadronic model used here. Some inconsistencies are detected in the fits to N_f=2+1 data, in contrast to the previous analysis of N_f=2 data.

Citations

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