Field Theory of Matter. II
Publisher
Springer Netherlands
Reference8 articles.
1. Julian Schwinger, Phys. Rev. Letters 12, 237 (1964)
2. Julian Schwinger Phys. Rev. 135, B816 (1964). See also Symmetry Principles at High Energy (W. H. Freeman and Company, Inc., San Francisco. 1964).
3. Indeed, the existence of these processes seems to involve the breakdown of SU3 symmetry, beyond the mere role of supplying the necessary energy. Thus the weak parity-violating coupling between K* and π that accounts for K
1
0
→ π+π (see Ref. 4) would vanish if the K and π masses were equal, owing to the transversality of the four-vector K* field. A similar remark applies to baryon decays. As we shall discuss elsewhere, simple models of parity-conserving decays depend upon coupling constant differences that would be zero were SU3 symmetry not broken. [Added
in proof. See J. Schwinger, Phys. Rev. Letters 13, 355 and 500 (1964).]
4. This idea is used to compute the absolute rate for the
$$\Delta T = \frac{3}{2}$$
process K+ → π
++π
0 in J. Schwinger, Phys. Rev. Letters 12, 630 (1964).
5. Some possibilities are discussed by S. Coleman and S. L. Glashow, Phys. Rev. 134, B671 (1964).