Phys. Rev. 121, 636–642 (1961)Symmetry Theorems for Isospin-Invariant ReactionsReceived 26 August 1960; published in the issue dated January 1961 Symmetry theorems, analogous to those well known for angular distributions and correlations, are given for isospin-invariant reactions starting from an initial state of limited complexity. Detailed calculations are carried out when the initial-state isospin does not exceed 3/2. A statistical generalization is given for averages over experiments starting from different charge states. Some properties of the irreducible tensor operators which arise from recoupling the angular momentum operator to itself are discussed. © 1961 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.121.636
DOI:
10.1103/PhysRev.121.636
PACS:
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