1 Erratum to: Eur. Phys. J. C (2016) 76:651 DOI 10.1140/epjc/s10052-016-4484-z

We correct the mistyped Eq. (4) of the original paper.

Equation (4) on the page 3 of our original paper should read:

$$\begin{aligned} \mathcal{L}_\mathrm {hV} = -v^2&\left[ \text{ Tr }(\bar{\omega }^{\perp })^2\left( 1+2a_V\frac{h}{v}+a_V'\frac{h^2}{v^2}+\cdots \right) \right. \nonumber \\&\quad \left. +\alpha \text{ Tr }(\bar{\omega }^{\parallel })^2\left( 1+2a_\rho \frac{h}{v}+a_\rho '\frac{h^2}{v^2}+\cdots \right) \right] .\nonumber \\\end{aligned}$$
(4)