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Hybrid Exotic Meson Decay Width | | M. S. Cook
; H. R. Fiebig
; | | Date: |
12 Sep 2005 | | Subject: | hep-lat | | Affiliation: | the LHP Collaboration | | Abstract: | We present results of a decay width calculation for a hybrid exotic meson(h, JPC=1-+) in the decay channel h to pi+a1. This calculation uses quenched lattice QCD and Luescher’s finite box method. Operators for the h and pi+a1 states are used in a correlation matrix which was expanded by varying the smearing and fuzzing levels at source and sink points. Scattering phase shifts for a discrete set of relative pi+a1 momenta are determined using eigenvalues of the correlation matrix and formulae derived by Luescher. The phase shift data is very sparse, but fits to a Breit-Wigner model are made, resulting in a decay width of about 80 MeV. | | Source: | arXiv, hep-lat/0509028 | | Services: | Forum | Review | PDF | Favorites | |
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