TY - JOUR
T1 - Neutral-current constraints on gauge models of weak and electromagnetic interactions
AU - Langacker, Paul
AU - Sidhu, Deepinder P.
N1 - Funding Information:
1 Work supported by ERDA contract AT(E11-1)3071 Theoretical. 2 Supported in part under contract EY-76-C-02-0016 with the U.S. Department of Energy.
PY - 1978/4/10
Y1 - 1978/4/10
N2 - 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.
AB - 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.
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U2 - 10.1016/0370-2693(78)90561-0
DO - 10.1016/0370-2693(78)90561-0
M3 - Article
AN - SCOPUS:49349123690
SN - 0370-2693
VL - 74
SP - 233
EP - 238
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3
ER -