Unique solution for the weak neutral current coupling constants in purely leptonic interactions
Abstract
By combining results from the MARK-J at PETRA on Bhabha scattering, μ +μ - and τ +τ - production with recent world data from neutrino-electron scattering experiments, we determine unique values for the leptonic weak neutral current coupling constants gV and gA in the framework of electroweak models containing a single Z 0. In contrast to previous analyses, we only use data from purely leptonic interactions, and therefore avoid the inherent uncertainties resulting from the use of hadronic targets. From the MARK-J data alone in the context of the standard SU(2) ⊗ U (1) model of Glashow, Weinberg and Salam, we find sin 2θW=0.24±0.11.
- Publication:
-
Physics Letters B
- Pub Date:
- September 1980
- DOI:
- 10.1016/0370-2693(80)90420-7
- Bibcode:
- 1980PhLB...95..149B