Scattering from finite-volume energies including higher partial waves and multiple decay channels

Ruairí Brett; John Bulava; Jacob Fallica; Andrew Hanlon; Ben Hörz; Colin Morningstar; Bijit Singha

doi:10.1051/epjconf/201817505005

Scattering from finite-volume energies including higher partial waves and multiple decay channels

High Energy Physics - Lattice 2018-04-18 v1

Authors: Ruairí Brett , John Bulava , Jacob Fallica , Andrew Hanlon , Ben Hörz , Colin Morningstar , Bijit Singha

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Abstract

A new implementation of estimating the two-to-two $K$ -matrix from finite-volume energies based on the Luescher formalism is described. The method includes higher partial waves and multiple decay channels, and the fitting procedure properly includes all covariances and statistical uncertainties. The method is also simpler than previously used procedures. Formulas and software for handling total spins up to $S=2$ and orbital angular momenta up to $L=6$ are presented.

Keywords

Luescher formalism K-matrix finite-volume energies higher partial waves multiple decay channels scattering

Cite

@article{arxiv.1710.04169,
  title  = {Scattering from finite-volume energies including higher partial waves and multiple decay channels},
  author = {Ruairí Brett and John Bulava and Jacob Fallica and Andrew Hanlon and Ben Hörz and Colin Morningstar and Bijit Singha},
  journal= {arXiv preprint arXiv:1710.04169},
  year   = {2018}
}

Comments

8 pages. Presented at Lattice 2017, the 35th International Symposium on Lattice Field Theory, Granada, Spain, 18-24 June 2017

Scattering from finite-volume energies including higher partial waves and multiple decay channels

Abstract

Keywords

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