There is also an associated antiparticle for each lepton, having the same mass but charged oppositely. While the three leptons that are electrically neutral are the neutrinos (v). However, assuming that typical mixings are comparable to the Cabibbo-Kobayashi-Maskawa matrix, processes such as coherent μ-e conversion in a muonic atom, K0-K0 and B-B̅ mixing, ε, and ε′/ε lead to significant constraints on Z′ bosons in the theoretically and phenomenologically motivated range MZ′∼1TeV. There are three well-known leptons that are electrically charged: Electron (e), Tauon (), and Muon (). Even within a specific theory the results are model dependent because of unknown quark and lepton mixing matrices. Results are described for three specific cases motivated by a specific heterotic string model and by phenomenological considerations, including cases in which all three families have different couplings, and those in which the first two families, but not the third, have the same couplings. Housewives' costar of Felicity 3 Lepton's locale 4 Island whose capital is Hagatna 5 Sumptuous meal 6 Idiot box 7 Construction beam 8 Ripped to pieces 9. The general formalism of such effects is described, and applications are made to a variety of flavor changing and CP-violating tree and loop processes. Flavor mixing in the quark and lepton sectors will then lead to flavor changing couplings of the heavy Z′, and also of the ordinary Z when Z-Z′ mixing is included. There are theoretical and phenomenological motivations that there may exist additional heavy Z′ bosons with family nonuniversal couplings. A real pub in the heart of the village of Lepton, The Sun, with its stunning views over the local countryside, is the perfect place to stop for a relaxing drink or bar snack.