${\Lambda }_c{\Sigma }_c\pi$ coupling and ${\Sigma }_c\to {\Lambda }_c\pi$ decay in lattice QCD

Abstract

We evaluate the ${\Lambda }_c{\Sigma }_c\pi$ coupling constant ($G_{{\Lambda }_c{\Sigma }_c\pi }$) 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 $G_{{\Lambda }_c{\Sigma }_c\pi }=18.332(1.476{)}_{stat.}(2.171{)}_{syst.}$ and the decay width $\Gamma ({\Sigma }_c\to {\Lambda }_c\pi )=1.65(28{)}_{stat.}(30{)}_{syst.}$~MeV on the physical quark-mass point, which is in agreement with the recent experimental determination.

10 pages, 5 figures

References in corpus (10)

• Big-Bang Nucleosynthesis
• Charmed bottom baryon spectroscopy from lattice QCD
• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Strong decays of charmed baryons
• Structure of charmed baryons studied by pionic decays
• Vector and axial-vector couplings of D and D* mesons in 2+1 flavor Lattice QCD
• On the reduction of hypercubic lattice artifacts
• Measurements of the properties of Lambda_c(2595), Lambda_c(2625), Sigma_c(2455), and Sigma_c(2520) baryons
• ${\Sigma }_Q{\Lambda }_Q\pi$ Coupling Constant in Light Cone QCD Sum Rules
• Pseudoscalar-meson--octet-baryon coupling constants in two-flavor lattice QCD

Cited by in corpus (1)

• Femtoscopic correlations and the ${\Lambda }_{c}N$ interaction