We consider radiative corrections to the masses of the Higgs bosons in a minimal supersymmetric model that contains an additional non-anomalous U(1) gauge symmetry. With some fine tuning of the U(1) charges of the Higgs fields, it is possible to suppress the Z–Z ′ mixing. We use this fact, along with the lower bound on the lightest Higgs mass after LEPII era, as a criterion to restrict the set ...

The Schwinger-Dyson equation for the quark self-energy is solved in the quenched ladder approximation for several cases of oneand two-quark-generations. The exchanges of standard model gluons and Higgs bosons are taken into account. It is found that Higgs boson exchange dominates the quark self-energy in the ultraviolet region for sufficiently large input quark masses (> 75 GeV), causing the ru...

We consider radiative corrections to the masses of the Higgs bosons in a minimal supersymmetric model that contains an additional non-anomalous U(1) gauge symmetry. With some fine tuning of the U(1) charges of the Higgs fields, it is possible to suppress the Z–Z ′ mixing. We use this fact, along with the lower bound on the lightest Higgs mass after LEPII era, as a criterion to restrict the set ...

In this study, the authors explore how vertical-mixing parameterizations influence the structure of zonal currents in the eastern equatorial Pacific using an isopycnal ocean model that contains an explicit surface mixed layer. The mixing parameterizations considered are the schemes that depend on the Richardson number (Ri). One of the schemes (the Step scheme) consists of high (nc) and low (nb)...

The impacts of climate change on tropospheric transport, diagnosed from a carbon monoxide (CO)-like tracer 15 species emitted from global CO sources, are evaluated from an ensemble of four chemistry-climate model (CCMs) contributing to the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). Model time-slice simulations for present-day and end of the 21 century conditions w...

This paper studies Lagrangian mixing in a twodimensional barotropic model for hurricane-like vortices. Since such flows show high shearing in the radial direction, particle separation across shear-lines is diagnosed through a Lagrangian field, referred to as R-field, that measures trajectory separation orthogonal to the Lagrangian velocity. The shear-lines are identified with the level-contours...

introduction water quality refers to the chemical, physical and biological characteristics of water. it is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose. it is most frequently used by reference to a set of standards against which compliance can be assessed. the most common standards used to assess water quality...

Monte Carlo simulations within the grand canonical ensemble are used to obtain the joint distribution of density and energy fluctuations pL(ρ, u) for two model fluids: a decorated lattice gas and a polymer system. In the near critical region the form of pL(ρ, u) is analysed using a mixed field finite-size-scaling theory that takes account of liquidvapour asymmetry. Field mixing transformations ...

At the eve of the second LHC data taking run, some of the most recent results obtained by the LHCb collaboration with Run I data are reviewed. Improved measurements on CP violation, unitary triangle and mixing parameters are shown. Recent progress on physics in the forward region is illustrated by examples picked up in the electroweak physics and beyond Standard Model searches.

The calculation of transport phenomena in boundary layers, pipe or duct ̄ows can be easily accomplished by a simple, zero order, mixing length formulation. The application of this model in simple engineering ̄ows, i.e., ̄ows without recirculation or asymmetry, is still widely extended because of its simplicity and its ability to match experimental results at the same degree than more elaborated mo...