A Slowly Rotating Black Hole in Horava-Lifshitz Gravity and a 3+1   Dimensional Topological Black Hole: Motion of Particles and BSW Mechanism
  The motion of a neutral particle in the vicinity of a slowly rotating black hole in the Horava-Lifshitz theory of gravity and 3+1 dimensional topological Lifshitz black hole is investigated. Geodesics for radial motion of the particles are also plotted. Some different cases of the orbital motion of the particle are discussed where maximum and minimum values of the effective potential are calculated. Further the Ba\~{n}ados, Silk and West (BSW) mechanism is studied for these black holes. It is shown that the centre-of-mass energy (CME) of two colliding uncharged particles at the horizon of these black holes remains finite. Thus the BSW effect cannot be seen in these cases. 
Ibrar Hussain, Mubasher Jamil, Bushra Majeed
gr-qc