Chiral Loop Effects in the Quenched Scalar Isovector Propagator

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Chiral Loop Effects in the Quenched Scalar Isovector Propagator

The scalar isovector meson propagator is studied in quenched QCD. For the lightest quark masses used, this propagator is dominated by a quenched chiral loop effect associated with the $\eta'$-$\pi$ two-meson intermediate state. Both the time dependence and the pion mass dependence of the effect are well-described by quenched chiral perturbation theory.

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Unit Title: TitleChiral Loop Effects in the Quenched Scalar Isovector Propagator

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Creator: N. Isgur, W. Bardeen, A. Duncan, E. Eichten, H. Thacker

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Language: eng

Biography or History: JLAB-THY-01-48, arXiv:hep-lat/0110187

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Other Descriptive Data: Nucl.Phys.Proc.Suppl.106:254-256,2002dOI: https://doi.org/10.1016/S0920-5632(01)01680-2

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