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Strong decays Σ ∗ → Σπ, Λπ and related strong coupling constant

By Zhi-gang Wang

Abstract

In this article, we calculate the strong coupling constant g among the decuplet baryons, the octet baryons and the pseudoscalar mesons in the heavy baryon chiral perturbation theory with the light-cone QCD sum rules, and study the strong decays Σ ∗ → Λπ,Σπ. The numerical value of the strong coupling constant g is consistent with our previous calculation, the central values lead to small SU(3) breaking effects, less than 6%; and no definitive conclusion can be drawn due to the large uncertainties. PACS numbers: 13.30.-a; 13.75.Gx

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