On radiative decay of Z′ boson

الأصل · EN

In the framework of the extended SU(2)ₕ× SU(2)ₗ model we study the radiative decay of an extra gauge boson Z′, Z′→γZ. The data analysis results of the CDF collaboration at the Fermilab Tevatron allow one to establish not only the lower bound of the decay probability Z′→γZ normalized to Drell-Yan process Z′→ μ⁺μ⁻, R(Z′→γZ/μ⁺μ⁻)> 1.4× 10⁻⁵²ϕ, but also to estimate the mixing angle ξ between the states Z′ and Z, |ξ| < 5× 10⁻², taking into account the additional mixing angle ϕ related to the extended gauge group SU(2)ₕ× SU(2)ₗ. The comparison with the decays Z′→τ⁺τ⁻ and Z′→ b b, Z′→ t t based on the LEP data is also presented.