The weak force has been found to violate the combined symmetry of parity and this quantity.
Either particle number or this quantity is the conserved quantity corresponding to the internal vector symmetry of the Dirac Lagrangian. A Majorana ("ma-yo-RA-na") spinor is invariant with respect to changes in this quantity. The impact of this quantity's spatial distribution on elastic scattering cross-sections is given by the form factor. Particles are categorized by their values for strangeness and this quantity on an (*) Eightfold Way diagram. The weak force has been found to violate the combined symmetry of parity and this quantity. For quarks, this quantity is either positive two-thirds or negative one-third. Flipping the sign of this quantity distinguishes matter from antimatter. For 10 points, name this quantity symbolized q that is measured in coulombs.
Either particle number or this quantity is the conserved quantity corresponding to the internal vector symmetry of the Dirac Lagrangian.
electric charge [accept q until read]