Table 2.

Signal parameters of the $J/\mathit{\psi }{\mathit{\pi }}^{+}$ mass distribution obtained with the unbinned extended maximum-likelihood fit. Only statistical uncertainties are shown. No acceptance corrections are applied to the signal yields

Parameter	Value
$m_{B_c^{+}\to J/\mathit{\psi }{\mathit{\pi }}^{+}}$ (MeV)	$6279.9\pm 3.9$
${\mathit{\sigma }}_{B_c^{+}\to J/\mathit{\psi }{\mathit{\pi }}^{+}}$ (MeV)	$33.9\pm 4.2$
$N_{B_c^{+}\to J/\mathit{\psi }{\mathit{\pi }}^{+}}$	$1140\pm 120$