Influence of CP and CPT on production and decay of Dirac and Majorana fermions

  • G. Moortgat-Pick
  • H. Fraas
Theoretical Physics


The consequences of CP and CPT invariance for production and subsequent decay of Dirac and Majorana fermions in polarized fermion-antifermion annihilation are analytically studied. We derive general symmetry relations for the production spin density matrix and for the three-particle decay matrices and obtain constraints for the polarization and the spin-spin correlations of Dirac and Majorana fermions. We prove that only for Majorana fermions the energy and opening angle distribution factorizes exactly into contributions from production and decay if CP is conserved.


Density Matrix Spin Density Angle Distribution General Symmetry Symmetry Relation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • G. Moortgat-Pick
    • 1
  • H. Fraas
    • 2
  1. 1.DESY, Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany DE
  2. 2. Institut für Theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany DE

Personalised recommendations