New Phenomena in Lepton-Hadron Physics pp 99-114 | Cite as

# The Last Heavy Lepton and The Next One

Chapter

## Abstract

The present leptonic SU_{2} × U_{1} weak interaction theory was formulated in 1967 (Ref. 1), ten years after the familiar V-A theory (Ref. 2). A decade later still, the low energy limit of this theory is now the successor to the V-A theory (Ref. 3). A brief explanation of why this is so (and why I will not discuss models) is in order. Most of us believe that charged current interactions are mediated by exchange of a massive charged vector boson (Ref. 1,2). In the low energy limit the V-A fheory with eμ universality results.

## Keywords

Current Algebra Class Current Heavy Lepton Elementary Fermion Charged Current Interaction
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## References

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## Copyright information

© Plenum Press, New York 1979