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:
A. González-Sánchez, A. Gutiérrez-Rodríguez, M. A. Hernández-Ruíz
KEYWORDS:
Ordinary Neutrinos, Neutral Currents, Models beyond the Standard Model
JOURNAL NAME:
Journal of Modern Physics,
Vol.6 No.8,
July
22,
2015
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 , we obtained a bound on the g'1 coupling, . In addition, we derive 90% C.L. bounds on the Z- Z′ mixing angle , improving the existing bounds by one order of magnitude.