SL: for Bc -> Bs Spruce lines, tune pt, vertex chi2 lines
As per https://gitlab.cern.ch/lhcb-dpa/project/-/issues/243#note_6896044 add some tuning cuts to attempt to reduce rate.
As per https://gitlab.cern.ch/lhcb-dpa/project/-/issues/243#note_6896044 add some tuning cuts to attempt to reduce rate.