Verification of CPT-invariance of QED bound states for the production of   muonium or antimuonium in scattering of electrons or positrons by nuclei
  A possibility of a verification of CPT-invariance of QED for bound states by example of muonium or antimuonium produced in reactions of scattering of electrons or positrons by nuclei is considered. The number of events of the muonium production is estimated for contemporary accelerators. The method of the detection of muonium by measuring of oscillations of the decay curve caused by the interference between the ground and excited state of muonium is suggested. The admixture of the excited muonium to the final state is calculated. 
E. A. Choban, G. A. Kazakov