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The eta-prime -> eta pi pi decay in U(3) chiral perturbation theory

N. Beisert, B. Borasoy

hep-pharXiv:hep-ph/0201289

Abstract

The dominant decay mode of the eta-prime, eta-prime -> eta pi pi, is investigated within the framework of infrared regularized U(3) chiral perturbation theory up to fourth chiral order and including one-loop corrections. We find reasonable agreement with experimental data and observe convergence of the chiral series.

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