ELECTRIC CHARGES OF POSITIVE AND NEGATIVE MUONS

Electric charges carried by positive and negative muons in units of an electric charge, e(mu+)/e = 1+/-1X10(-7) and e(mu-)/e = -1+/-2X10(-5) , are derived from the theoretical and experimental values of the grou nd-state hyperfine-structure intervals Delta nu in muonium and muonic helium atoms as tests of electric-chage quantization for muons. These results also provide a test of CPT symmetry for positive and negative muon charges, with an accuracy of 2 parts in 10(5). Further improvemen ts can be made from more precise theoretical and experimental values f or Delta nu in muonium and muonic helium atoms with the approach descr ibed in this paper.