Neutrino questions Hi you indicated awhile ago that sterile neutrinos can oscillate with normal neutrinos I m trying to understand sterile neutrinos I m not clear whether sterile just means right handed Are they synonymous for neutrinos with the usual proviso that we switch left right for particle anti particle If sterile neutrinos are just right handed neutrinos then it seems to me that they will have different weak hypercharge 0 for right handed neutrinos 1 for the left handed neutrinos and X charge If so wouldn t that prevent their mixing