Reply to "Comment on `Black Holes are neither Particle Accelerators nor Dark Matter Probes' "

We respond to a recent criticism from Zaslavskii (arXiv:1301.3429v2 [gr-qc]) of our article, which appeared in Phys. Rev. Lett. 110 011102 (2013). We clarify the points of apparent disagreement, none of which relate to the central result of our original paper, which is the demonstration that the diverging center-of-masss energy of collisions in Kerr spacetime, known as the "BSW effect", can never be observed in nature. To emphasize this result, we present it in a more concise way which completely avoids any of the questions brought up by Zaslavskii.

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