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Type: Journal article
Title: Scattering phases for meson and baryon resonances on general moving-frame lattices
Author: Gockeler, M.
Horsley, R.
Lage, M.
Meisner, U.
Rakow, P.
Rusetsky, A.
Schierholz, G.
Zanotti, J.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2012; 86(9):1-19
Publisher: American Physical Soc
Issue Date: 2012
ISSN: 1550-7998
Statement of
M. Göckeler, R. Horsley, M. Lage, U.-G. Meißner, P. E. L. Rakow, A. Rusetsky, G. Schierholz, and J. M. Zanotti
Abstract: A proposal by Lüscher enables one to compute the scattering phases of elastic two-body systems from the energy levels of the lattice Hamiltonian in a finite volume. In this work, we generalize the formalism to S-, P- and D-wave meson and baryon resonances, and general total momenta. Employing nonvanishing momenta has several advantages, among them making a wider range of energy levels accessible on a single lattice volume and shifting the level crossing to smaller values of mπL.
Rights: © 2012 American Physical Society
RMID: 0020123319
DOI: 10.1103/PhysRevD.86.094513
Appears in Collections:Chemistry and Physics publications

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