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$$Lambda_c Sigma_c pi$$ coupling and $$Sigma_c to Lambda_c pi$$ decay in lattice QCD

格子QCDによる$$Lambda_c Sigma_c pi$$結合と$$Sigma_c to Lambda_c pi$$崩壊

Can, K. U.*; Erkol, G.*; 岡 眞   ; 高橋 徹*

Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

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

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パーセンタイル:55.37

分野:Astronomy & Astrophysics

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