  We demonstrate that the four-dimensional Gauss-Bonnet black hole can act as a
particle accelerator with arbitrarily high centre-of-mass energy, during the
collision of two general particles near the event horizon. The Gauss-Bonnet
coupling constant $\alpha$, provides a deviation in the results from that of
Kerr black hole. Our results show that the horizon structure, the range of
allowed angular momentum and the critical angular momentum depend on the value
of $\alpha$. For extremal cases, the centre-of-mass energy diverges near the
horizon, suggesting that Gauss-Bonnet black hole can also act as a particle
accelerator like a Kerr black hole. This is interesting in the context of
probing the Planck scale physics. For the non-extremal case there exists a
finite upper bound on the centre-of-mass energy, the maximal value of which
depends on the parameter $\alpha$.
