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arXiv · 1610.09071

$Λ_cΣ_cπ$ coupling and $Σ_c \rightarrowΛ_c π$ decay in lattice QCD

K. U. Can·G. Erkol·M. Oka·T. T. Takahashi
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Abstract

We evaluate the $Λ_cΣ_cπ$ coupling constant ($G_{Λ_c Σ_c π}$) and the width of the strong decay $Σ_c \rightarrowΛ_c π$ in 2+1 flavor lattice QCD on four different ensembles with pion masses ranging from 700 MeV to 300 MeV. We find $G_{Λ_c Σ_c π}=18.332(1.476)_{\rm{stat.}}(2.171)_{\rm{syst.}}$ and the decay width $Γ(Σ_c \rightarrowΛ_c π)=1.65(28)_{\rm{stat.}}(30)_{\rm{syst.}}$~MeV on the physical quark-mass point, which is in agreement with the recent experimental determination.

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K. U. Can, G. Erkol, M. Oka, T. T. Takahashi. 2016-10-28. $Λ_cΣ_cπ$ coupling and $Σ_c \rightarrowΛ_c π$ decay in lattice QCD. https://doi.org/10.1016/j.physletb.2017.03.006

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