The LEP bounds on the rareZdecaysZ→ &ngr;&ngr;¯&ggr;,Z→ &ngr;&ngr;¯&ggr;&ggr; andZ→ &ggr;&ggr;&ggr; are useful to put constraints on some new physics effects such as neutrino‐one‐photon and neutrino‐two‐photon interactions, and a possible light pseudoscalar. These constraints can be used to bound the &tgr; neutrino magnetic moment &mgr;&ngr;&tgr;and the &tgr; neutrino decay &ngr;&tgr;→ &ngr;i&ggr;&ggr;. © 2003 American Institute of Physics