Black Holes at the LHC can Determine the Spin of Higgs Bosons
  We propose a new method to determine the spin of Higgs bosons at the LHC by using the decay products of black holes. Black holes may be produced if TeV-scale gravity theories are correct, and black holes decay into several particles. This decay results in the emission of high energy particles, including Higgs bosons. The difference of the degree of freedom between spin 0 and spin 1 Higgs bosons leads to a difference of the number of reconstructed Higgs bosons. From this fact, we can determine the spin of Higgs bosons with $5 \sigma$ significance by using the integrated luminosity L = 2.4 fb^-1, which can be accumulated in only one month operation. 
Yosuke Uehara