1 Erratum to: Eur. Phys. J. C (2018) 78:457 https://doi.org/10.1140/epjc/s10052-018-5929-3

We have corrected Eqs. (17)–(20) from Section 8 of the original paper. The published versions of Eqs. (17) and (18) were mistakenly the same and Eqs. (19) and (20) were reversed. Below are the corrected equations:

$$\begin{aligned}&\tau _{\varLambda _\mathrm {b}^0}/\tau _{{\mathrm {B}^0}\rightarrow \mathrm {J}/\psi \mathrm {K^{*}(892)}{}^{0}} \nonumber \\&\quad = 0.978 \pm 0.018\,\text {(stat)} \pm 0.006\,\text {(syst)}, \end{aligned}$$
(17)
$$\begin{aligned}&\tau _{\mathrm {B}^0_\mathrm {s} \rightarrow \mathrm {J}/\psi \mathrm {\phi (1020)}}/\tau _{{\mathrm {B}^0}\rightarrow \mathrm {J}/\psi \mathrm {K^{*}(892)}{}^{0}} \nonumber \\&\quad = 0.980 \pm 0.006\,\text {(stat)} \pm 0.003\,\text {(syst)}. \end{aligned}$$
(18)
$$\begin{aligned}&\tau _{{\mathrm {B}^0}\rightarrow \mathrm {J}/\psi \mathrm {K^0_S}} = \frac{1}{\varGamma _\mathrm {d}} \left( \frac{1}{1-y_\mathrm {d}^2}\right) \left( \frac{1+2\cos {(2\beta )}y_\mathrm {d}+y_\mathrm {d}^2}{1+\cos {(2\beta )}y_\mathrm {d}}\right) ,\nonumber \\ \end{aligned}$$
(19)
$$\begin{aligned} \tau _{{\mathrm {B}^0}\rightarrow \mathrm {J}/\psi \mathrm {K^{*}(892)}{}^{0}} = \frac{1}{\varGamma _\mathrm {d}} \left( \frac{1+y_\mathrm {d}^2}{1-y_\mathrm {d}^2}\right) , \end{aligned}$$
(20)