I know that
$$p+\bar{p}\to 4\pi^++4\pi^-+(\gamma)$$
Before the collision, the sum of absolute electric charge value is $2$.
$$\left | +1 \right |+\left | -1 \right |=2$$
After the collision, the $p$ collapses to $4\pi^+$, and $\bar{p}$ collapses to $4\pi^-$.
After that, $4\pi^+$ collapse to $4\mu^++(\nu)$, and $4\pi^-$ collapse to $4\mu^-+(\bar{\nu})$.
$$\pi^+\to\mu^++\nu$$ $$\pi^-\to\mu^-+\bar{\nu}$$
And then, $4\mu^+$ collapse to $4e^++(\nu+\bar\nu)$, and $4\mu^-$ collapse to $4e^-+(\nu+\bar\nu)$
$$\mu^+\to e^++(\nu+\bar\nu)$$ $$\mu^-\to e^-+(\nu+\bar\nu)$$
The result is
$$p+\bar{p}\to 4\pi^++4\pi^-+(\gamma)\to 4\mu^++4\mu^-+(\gamma) \to 4e^++4e^-+(\gamma)$$
In this situation, the sum of absolute electric charge value is $8$.
$$\left | +4 \right |+\left | -4 \right |=8$$
Question. How could it possible that the sum of absolute electric charge value has increased?
Added. 'So, what's the significance?'
Electric force bwtween $p$ and $e^-$
$$F=k\frac{e^2}{r^2}$$
Electric force bwtween $4e^+$ and $e^-$
$$\sum_{n=1}^{4} k\frac{e^2}{(r_{n})^2}$$
$p$'s electric charge is +1, but after this collision, $p$ collapses to $4e^+$, it means the total electric charge has increased $+1$ to $+4$.