I currently have a problem where a decay calculation $J^P=(1/2)^+$ decays into a meson $0^-$ and a nucleon $(1/2)^+$. While $J = L + S$ is conserved, it still appears that parity isn't. $l=0$$L=0$ in this case. Is this consistent with $N(1440)\rightarrow \pi + N$ where $N$ is any nucleon?