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

Paul Langacker; Deepinder P. Sidhu

doi:10.1016/0370-2693(78)90561-0

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

Paul Langacker, Deepinder P. Sidhu

Physics

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35 Scopus citations

Abstract

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 ν_μ and ν̄_μ spectra in the elastic ν_μp (ν̄_μp) 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 language	English (US)
Pages (from-to)	233-238
Number of pages	6
Journal	Physics Letters B
Volume	74
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(78)90561-0
State	Published - Apr 10 1978

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(78)90561-0

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title = "Neutral-current constraints on gauge models of weak and electromagnetic interactions",

abstract = "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 {\=ν}μ spectra in the elastic νμp ({\=ν}μp) 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.",

author = "Paul Langacker and Sidhu, {Deepinder P.}",

note = "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.",

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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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JO - Physics Letters B

JF - Physics Letters B

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

Abstract

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