Study of decuplet baryon resonances from lattice QCD
Name
PhysRevD.93.114515.pdf
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890.39 KB
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Author(s)
Alexandrou, C.
Petschlies, M.
Syritsyn, S. N.
Pochinsky, Andrew
Negele, John W.
Date Issued
June 2016
Journal
Physical Review D
Publisher
American Physical Society
Citation
Alexandrou, C. et al. “Study of Decuplet Baryon Resonances from Lattice QCD.” Physical Review D 93.11 (2016): n. pag. © 2016 American Physical Society
Version
Final published version
Abstract
A lattice QCD study of the strong decay width and coupling constant of decuplet baryons to an octet baryon-pion state is presented. The transfer matrix method is used to obtain the overlap of lattice states with decuplet baryon quantum numbers on the one hand and octet baryon-pion quantum numbers on the other as an approximation of the matrix element of the corresponding transition. By making use of leading-order effective field theory, the coupling constants as well as the widths for the various decay channels are determined. The transitions studied are Δ→πN, Σ[superscript *]→Λπ, Σ^[superscript *]→Σπ and Ξ[superscript *]→Ξπ. We obtain results for two ensembles of N[subscript f]=2+1 dynamical fermion configurations: one using domain wall valence quarks on a staggered sea at a pion mass of 350 MeV and a box size of 3.4 fm and a second one using domain wall sea and valence quarks at pion mass 180 MeV and box size 4.5 fm.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.93.114515
