  The rotating regular Hayward's spacetime, apart from mass ($M$) and angular
momentum ($a$), has an additional deviation parameter ($g$) due to the magnetic
charge, which generalizes the Kerr black hole when $g\neq0$, and for $g=0$, it
goes over to the Kerr black hole. We analyze how the ergoregion is affected by
the parameter $g$ to show that the area of ergoregion increases with increasing
values of $g$. Further, for each $g$, there exist critical $a_E$, which
corresponds to a regular extremal black hole with degenerate horizons
$r=r^E_H$, and $a_E$ decrease whereas $r^E_H$ increases with an increase in the
parameter $g$. Ban{\~a}dos, Silk and West (BSW) demonstrated that the extremal
Kerr black hole can act as a particle accelerator with arbitrarily high
center-of-mass energy ($E_{CM}$) when the collision of two particles takes
place near the horizon. We study the BSW process for two particles with
different rest masses, $m_1$ and $m_2$, moving in the equatorial plane of
extremal Hayward's black hole for different values of $g$, to show that
$E_{CM}$ of two colliding particles is arbitrarily high when one of the
particles takes a critical value of angular momentum. For a nonextremal case,
there always exist a finite upper bound for the $E_{CM}$, which increases with
the deviation parameter $g$. Our results, in the limit $g \rightarrow 0$,
reduces to that of the Kerr black hole.
