coupling and decay in lattice QCD

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

We evaluate the coupling constant () and the width of the strong decay 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.

Language	:	English
Journal	:	Physics Letters B
Volume	:	768
Number	:
Pages	:	p.309 - 316
Publication Year/Month	:	2017/05
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Paper URL	:	https://doi.org/10.1016/j.physletb.2017.03.006
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Keywords	:	no keyword
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Registration No. : AA20160620
JAEA Abstracts No. :
Paper Submission No. : 26763

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