Phys. Rev. 88, 101–105 (1952)The Intrinsic Parity of Elementary ParticlesReceived 16 June 1952; published in the issue dated October 1952 The limitations to the concept of parity of quantum-mechanical states and, in particular, of intrinsic parity of elementary particles are discussed. These limitations are shown to follow from "superselection rules," i.e., from restrictions on the nature and scope of possible measurements. The existence of such superselection rules is proved for the case of spinor fields; it is also conjectured that a superselection rule operates between states of different total charge. © 1952 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.88.101
DOI:
10.1103/PhysRev.88.101
PACS:
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