@article{oai:nagoya.repo.nii.ac.jp:00026955,
 author = {Okamoto, Yuko and Yamamoto, Katsuji},
 issue = {1-2},
 journal = {Physics Letters B},
 month = {Jun},
 note = {We investigate phenomenological roles of possible global symmetries in a class of superstring inspired models. Such global symmetries may be present in the full string theory or may incidentally appear in the effective theory of the low-energy sector. We find that if a model has a discrete symmetry, Zn, which acts in a generation-independent way, it is naturally embedded in a U(1) symmetry of the low-energy lagrangian. Then, such global U(1) symmetries (through suitable redefinition in terms of the local U(1)'s) remain even after the spontaneous breakdown of the gauge symmetries at O(MW). Some discussion is also presented for generation-dependent symmetries.},
 pages = {103--108},
 title = {On possible global symmetries in superstring inspired supersymmetric models},
 volume = {191},
 year = {1987}
}