The implications of this quantity being conserved are that all observable particles have mirror images that could also exist, and would obey the same physical laws.
This quantity was shown to lack conservation in a 1956 experiment by Wu in which cobalt-60 was found to emit decay particles preferentially rather than uniformly, though conservation still holds for strong nuclear and electromagnetic interactions. That experiment was performed after Yang and Lee hypothesized its violation in weak interactions. The Laporte selection rule is derived from another rule that states this value is changed during an electron (*) transition, and for composite systems its value is the product of its value for the individual subsystems. The implications of this quantity being conserved are that all observable particles have mirror images that could also exist, and would obey the same physical laws. For 10 points, name this quantity which all systems possess, which has a value of either positive or negative one.
This quantity was shown to lack conservation in a 1956 experiment by Wu in which cobalt-60 was found to emit decay particles preferentially rather than uniformly, though conservation still holds for strong nuclear and electromagnetic interactions.
{parity}