Neutral-current constraints on gauge models of weak and electromagnetic interactions

Paul Langacker, Deepinder P. Sidhu

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


Sehgal and Hung and Sakurai have recently argued that neutrino-hadron neutral-current couplings must lie in one of two allowed regions in coupling-parameter space. We study this conjecture using realistic BNL νμ and ν̄μ spectra in the elastic νμp (ν̄μp) calculations and also study constraints imposed by theq2-distributions. On comparing to gauge models, we find that the Weinberg-Salam and SU(2)L×SU(2)R×U(1) models fall within one allowed region, while a vectorlike SU(3)×U(1) model and a hybrid SU(2)×U(1) model with a (u, b)R doublet fall in the other region.

Original languageEnglish (US)
Pages (from-to)233-238
Number of pages6
JournalPhysics Letters B
Issue number3
StatePublished - Apr 10 1978

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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