Are there any particles which have a neutral electrical charge and are not affected by the weak or strong nuclear force? Thank you for your time and please excuse me if I'm being very ignorant!
I would argue against the last sentence here. You cannot hypothesise anything which cannot be experimentally detected within a scientific framework.Einstein's Cat, such a particle would be sterile and thus undetectable. You can hypothesize such particles, but you can't experimentally detect them.
If the particles have mass, they could be detected by their gravitational effects.Syndicate, if you don't know something it is not necessary to reply.
Einstein's Cat, such a particle would be sterile and thus undetectable. You can hypothesize such particles, but you can't experimentally detect them.
But gauge singlets (effectively right handed neutrinos) may be detectable (a priori) through Yukawa interactions with left-handed neutrinos.But if I said there were no such particles someone else would quibble, "but what if there were singlets under all gauge groups?" Sometimes you just can't win.