Neutral currents bring rewards

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

Solar neutrino interactions: Using charged currents at SNO to tell neutral currents at Super-Kamiokande

In the presence of flavor oscillations, muon and tau neutrinos can contribute to the Super-Kamiokande (SK) solar neutrino signal through the neutral current process νμ,τ e − → νμ,τ e. We show how to separate the νe and νμ,τ event rates in SK in a model independent way, by using the rate of the charged current process νe d → p p e from the Sudbury Neutrino Observatory (SNO) experiment, with an a...