The eta decay constant in `resummed' chiral perturbation theory

Details The eta decay constant in `resummed' chiral perturbation theory The eta decay constant in `resummed' chiral perturbation theory

2008-02-08

arxiv.org/abs/0802.1151v1

Fizika B17:57-66,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented by M.K. at Hadron Structure'07, Modra, Slovakia, 3-7.9.2007

Scientific paper

The recently developed 'Resummed' ChPT is illustrated on the case of pseudoscalar meson decay constants. We try to get an estimate of the eta decay constant, which is not well known from experiments, while using several ways including the Generalized ChPT Lagrangian to gather information beyond Standard next-to-leading order. We compare the results to published ChPT predictions, our own Standard ChPT calculations and available phenomenological estimates.

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