.$$Below this temperature, the new minimum becomes the absolute one, and the system has to move from the old (false) vacuum to the new (true) one. In the case where a barrier does exist between the two minima, this transition has to occur via tunneling trough bubbles nucleation at certain points, which expand and the whole space by the new vacuum $\upsilon _{1,2}\left( T\right)
\neq 0$, i.e., the symmetry is broken.

If the effective potential (\[Vt\]) is expanded as powers of $m/T$ (in the limit $m<<T)$ in a similar way to the SM in the doublets direction, the two leading terms are of order $h^{2}T^{2}$ and $h^{3}T$. The first term determines the temperature when the barrier between the potential two minima disappears, while the second term is relevant to the strength of the first-order phase transition. It turns out that a resummation of the so-called Daisy diagrams [@daisy], leads to a contribution of order $%
h^{3}T$ which exactly cancels the contribution from certain particles (e.g. Higgs and longitudinal gauge bosons). Therefore this screening effect could weaken the strength of the EWPT. For that, we will check the importance of this effect by using a resumed effective potential where (\[Vt\]) is 