Some properties of B_c from Lattice QCD

Seyong Kim

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arXiv · hep-lat/9511010

Some properties of B_c from Lattice QCD

Seyong Kim

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Abstract

We discuss $B_c$ mass (1S state) and decay constant $f_{B_c}$ calculated by lattice non-relativistic quantum chromodynamcs(NRQCD) method. In leading order of $v^2$, we found that $M_{B_c} = 6.33(2)$ GeV and $f_{B_c} = 395(2)$ MeV where the error bar is the statistical error only. Using these values, we estimate QCD effects to leptonic decay width of $B_c$. The decay width is given by $Γ(B_c \rightarrow l^+ν_l) = 0.86(15)m^2_l (1 - 0.0250(2)m^2_l)^2\times 10^{-14} ({\rm GeV})$, where $m_l$ is in GeV. Relativistic correction and $α_s$ correction to $f_{B_c}$ have also been considered.

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Seyong Kim. 1995-11-08. Some properties of B_c from Lattice QCD. https://arxiv.org/abs/hep-lat/9511010

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