Possible Tests forCPNoninvariance InvolvingJParticles

Abstract

If, in collisions of hadrons, the newly discovered $J^0$ particle turns out to be produced in association with its antiparticle ${\overline{J}}^0$ with conservation of an additive quantum number, then the decays of the $J^0-{\overline{J}}^0$ systems produced in hadron collisions and in $e^{+}{e}^{-}$ colliding beams provide new possibilities for studying the nature and the strength of $\mathrm{CP}$-invariance-violating interactions.