if (!tneg || !tpos) return kFALSE ;
if ( ! fCutNeg->IsSelected((TObject*)tneg) || ! fCutPos->IsSelected((TObject*)tpos) ) return kFALSE ;
if (!tneg || !tpos) return kFALSE ;
if ( ! fCutNeg->IsSelected((TObject*)tneg) || ! fCutPos->IsSelected((TObject*)tpos) ) return kFALSE ;