Particle acceleration around a five-dimensional Kerr black hole

On the lines of the four-dimensional Kerr black hole we consider the particle acceleration near a five-dimensional Kerr black hole which has the two rotation parameters. It turns out that the center of mass energy of the two equal mass colliding particles as expected diverges for the extremal black hole and there is a symmetry in the results for theta = 0, pi/2. Because of the two rotation parameters, r = 0 can be a horizon without being a curvature singularity. It is shown that the acceleration of particles to high energies near the 5D extreme rotating black hole avoids fine-tuning of the angular momentum of particles.