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π-π scattering, QED and finite-volume quantization
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$\pi-\pi$ scattering, QED and finite-volume quantization
abstract
Using the Coulomb gauge formulation of QED we present a lattice QCD procedure to calculate the $\pi^+\pi^+$ scattering phase shift including the effects of the Coulomb potential which appears in this formulation. The approach described here incorporates the effects of relativity and avoids finite-volume corrections that vanish as a power of the volume in which the lattice calculation is performed. This is the first step in developing a complete lattice QCD calculation of the electromagnetic and isospin-breaking light-quark mass contributions to $\varepsilon'$, the parameter describing direct CP violating effects in $K_L\to\pi\pi$ decay.
Forward citations
Cited by 1 Pith paper
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Data-driven trap theory for nuclear scattering
A data-calibrated quantization condition is proposed to extract nuclear scattering phase shifts from harmonic-trap spectra for neutral and charged particles.
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