Application of Current Algebra Techniques to Neutral-Current-Induced Threshold Pion Production
- 16 December 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 33 (25) , 1511-1514
- https://doi.org/10.1103/physrevlett.33.1511
Abstract
I apply current-algebra techniques to study threshold pion production induced by the weak neutral current. In addition to specific predictions for the Weinberg-Salam-model current, I find upper bounds on the magnitude of threshold pion production for an isoscalar neutral current and for a general hadronic neutral current formed from the usual vector and axial-vector nonets. Violation of these bounds would suggest the presence of new coupling types in the neutral semileptonic interaction.Keywords
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