Evidence for violations of Weak Cosmic Censorship in black hole collisions in higher dimensions

A bstract We study collisions of boosted rotating black holes in D = 6 and 7 spacetime dimensions with a non-zero impact parameter. find that there exists an open set initial conditions such the intermediate state collision is hole dumbbell-like horizon which unstable to local Gregory-Laflamme-type instability. are able provide convincing numerical evidence evolution instability leads pinch off finite asymptotic time thus forming naked singularity, as similar holes. Since stable, this first genuinely generic for violation Weak Cosmic Censorship Conjecture higher dimensional asymptotically flat spacetimes.