9 #ifndef THEPEG_SpinHalfLorentzRotation_H
10 #define THEPEG_SpinHalfLorentzRotation_H
14 #include "ThePEG/Helicity/HelicityDefinitions.h"
83 std::ostream &
print( std::ostream & os )
const;
236 assert(i<=3 && j<=3);
330 vector<vector<Complex> >
_mx;