I think that charging symmetry assumes antiparticle presence, which has an opposite charge sign . And what symmetry assumes existence of an antiparticle at a neutral particle

  • $\begingroup$ See also this question. $\endgroup$ Commented Dec 2, 2011 at 1:00
  • $\begingroup$ Would it be possible to clarify the question title? And the question body, for that matter? I don't quite understand what it's asking... $\endgroup$
    – David Z
    Commented Dec 2, 2011 at 9:39

1 Answer 1


Anti-matter is not just the opposite charge sign. To convert matter to anti-matter you apply the C-parity operation which change more quantum numbers than just charge. In the case of the neutrino the lepton number is switched,

  • 1
    $\begingroup$ But Majorana neutrinos are their own antiparticles. $\endgroup$ Commented Dec 2, 2011 at 1:02
  • $\begingroup$ Further, lepton number is not conserved. $\endgroup$
    – Ron Maimon
    Commented Aug 23, 2012 at 5:55

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.