The SoftKiller FastJet contrib was written and is maintained 
and developed by

  Matteo Cacciari <cacciari@lpthe.jussieu.fr>
  Gavin P. Salam  <gavin.salam@cern.ch>
  Gregory Soyez   <soyez@fastjet.fr>

See http://arxiv.org/abs/1407.0408 for all the details about the
physics.