The decay Z → Q+ ll, where Q is a J = 1 quarkonium state, has a very clean final state, which should make it easy to detect. The branching ratio of this mode is greater than 10 for ρ, φ, and ψ, indicating that these processes may be detectable at LEP. Well over one million Z decay events have been accumulated at LEP, and further improvements are expected. This makes it possible to investigate r...

In this article, is proposed to identify the methods for estimating aerodynamic roughness length (z0) best suited feasibility studies construction of wind farms. For that, a systematic review carried out filter latest works that apply different find z0 values. Identifying specific surface important simulate vertical profile and mechanical turbulent fluxes estimation in atmospheric layer. Must b...