Neutral currents, Mz and mt

Flavour-Changing Neutral Currents

In this paper we will present the theory of Flavour-Changing Neutral Currents and the possible implications for the discovery of new particles. We also present a search for such currents in decays of B s → μ+μ− and B → μ+μ− , which has direct implications for the constraints of new theories, especially Supersymmetry.

Flavor Changing Neutral Currents

A study of Rb and Rc is presented in the context of a Two Higgs Doublet Model (2HDM) with flavor changing scalar currents (FCSC). Implications of the model for the ρ-parameter and for b → sγ are also considered. The experimental data on Rb places stringent constraints on the model parameters. The configuration of the model needed to account for Rb is found to be irreconcilable with constraints ...

WEAK NEUTRAL CURRENTS IN e + -

The differential cross section of e+e--) F+F(F+=p+, p, 1;‘, etc.) is calculated for arbitrarily polarized incident and outgoing beams by exchanging one photon and one neutral Z-meson coupled to neutral weak currents. The interference effects manifest themselves in significant parity violating asymmetries for longitudinal polarizations which are about 4(4.5)0/o at q=28 GeV, 9(12.5)% at q=40 GeV ...

Preventing Neutral Circulating Currents when Paralleling Generators

Higher bifurcation currents, neutral cycles and the Mandelbrot set

We prove that given any θ1, . . . , θ2d−2 ∈ R\Z, the support of the bifurcation measure of the moduli space of degree d rational maps coincides with the closure of classes of maps having 2d − 2 neutral cycles of respective multipliers e1 , . . . , e2d−2 . To this end, we generalize a famous result of McMullen, proving that homeomorphic copies of (∂M) are dense in the support of the k-bifurcatio...