Meson Production inp+dCollisions and theI=0π−πInteraction. III. Spin and Parity of theI=0Anomaly

Abstract

In an auxiliary experiment an attempt was made to determine the spin and parity of the $I=0\mathrm{}$ anomaly by detecting charged pions and gamma rays in coincidence with ${\mathrm{He}}^3$. The results are consistent with the interpretation that the predominant mode of decay is into two pions with a charged-to-neutral ratio of $\frac{2}{1}$, indicating a state of spin 0 and even parity.