For 10 points, name this symmetry of a variable or a system which can be either even or odd.
A transition that preserves this quantity in a centrosymmetric molecule cannot preserve symmetry orasymmetry about an inversion center according to Laporte's rule. A Majorana neutrino would have animaginary value for this quantity. For a nucleon, this quantity is equal to negative one to the L. The operatorcorresponding to this value has eigenvalues of one or negative one. The tau-theta puzzle was solved by notingthat this value is (*) not conserved in some kaon decays. The product of this quantity with the charge and timereversalsymmetry is always conserved, though C.S. Wu showed that its product with charge isn't conserved in thebeta decay of cobalt-60. This symmetry corresponds to flipping a wavefunction from psi of x to psi of negative x.For 10 points, name this symmetry of a variable or a system which can be either even or odd.
A transition that preserves this quantity in a centrosymmetric molecule cannot preserve symmetry orasymmetry about an inversion center according to Laporte's rule.
parity