# Weak Interaction and Strangeness transformation

Is there any processes involving weak interaction that preserve the strangeness for $$S \neq 0$$?

I can't find an answer to it on net or anywhere else, generally it is true that weak interaction changes strangeness by 1 unit.

• Fixed that for you. – Gert Mar 10 at 23:43

Sure, your PDG reminds you of the strangeness-conserving decays of $$\Sigma^\pm \to \Lambda e^\pm \nu ,$$ where the antineutrino is meant to accompany the electron, mutatis mutandis.