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arXiv · 1101.3347

Extracting Scattering Phase-Shifts in Higher Partial-Waves from Lattice QCD Calculations

Thomas Luu·Martin J. Savage
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Abstract

Lüscher's method is routinely used to determine meson-meson, meson-baryon and baryon-baryon s-wave scattering amplitudes below inelastic thresholds from Lattice QCD calculations - presently at unphysical light-quark masses. In this work we review the formalism and develop the requisite expressions to extract phase-shifts describing meson-meson scattering in partial-waves with angular-momentum l<=6 and l=9. The implications of the underlying cubic symmetry, and strategies for extracting the phase-shifts from Lattice QCD calculations, are presented, along with a discussion of the signal-to-noise problem that afflicts the higher partial-waves.

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BibTeXRIS

Thomas Luu, Martin J. Savage. 2011-01-17. Extracting Scattering Phase-Shifts in Higher Partial-Waves from Lattice QCD Calculations. https://doi.org/10.1103/physrevd.83.114508

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