Abstract
It is shown that a light-cone expansion with a general singularity structure leading to asymptotically canonical scaling implies the absence of an operator-valued Schwinger term in the one-particle matrix elements of the space-space current commutator. The consistency between the Cabibbo Radicati and Gell-Mann-Dashen-Lee magnetic moment sum rules has been conjectured to depend upon the existence of such a Schwinger term; we show, however, that the structure of the generalized light-cone expansion is sufficient to obtain consistency for a sum rule saturated by a few intermediate states.
Original language | English |
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Pages (from-to) | 359-367 |
Number of pages | 9 |
Journal | Nuclear Physics B |
Volume | 100 |
Issue number | 2 |
DOIs | |
State | Published - 15 Dec 1975 |
Externally published | Yes |