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Title: Bounds on the Number of Light Neutrinos Species, g'1 Coupling and Z − Z' Mixing Angle in a U(1)B−L Model
Authors: González Sánchez, Alejandro
Gutiérrez Rodríguez, Alejandro
Hernández Ruíz, María de los Angeles
Issue Date: 19-Jul-2015
Publisher: Scientific Research Publishing
Abstract: The constraints on the number of neutrinos generations, g'1 coupling and Z − Z′ mixing angle through the invisible width method, and in the framework of a U(1)B−L model are obtained. Based on the experimental value reported by the LEP for the rate LEP R = Γinv/ Γ = 5.942 ± 0.016 , we obtained a bound on the g′1 coupling, g′1 ≤ 0.65 . In addition, we derive 90% C.L. bounds on the Z − Z′ mixing angle -2.2 x10^−4 ≤ θ_B-L ≤1.0 ×10^-4, improving the existing bounds by one order of magnitude.
ISSN: 2153-1196
Other Identifiers: info:eu-repo/semantics/publishedVersion
Appears in Collections:*Documentos Académicos*-- UA Ciencias Químicas

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