Eur. Phys. J. C (2009) 61: 299-309
https://doi.org/10.1140/epjc/s10052-009-0984-4

Regular Article - Theoretical Physics

Strong decays Σ ^*→Σ π,Λ π and related strong coupling constant

Department of Physics, North China Electric Power University, Baoding, 071003, China

^* e-mail: wangzgyiti@yahoo.com.cn

Received: 13 October 2008
Revised: 12 February 2009
Published online: 8 April 2009

Abstract

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 we study the strong decays Σ ^*→Λ π,Σ π. 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.