Speaker
Description
Upgrading the SuperKEKB e+e− collider with polarized electron beams, the Chiral Belle project, provides new and unique opportunities for searches for new physics via precision electroweak and other measurements, including measurements involving the tau lepton.
These include measurements the neutral current vector couplings via left-right asymmetry (ALR) measurements in annihilations to pairs of electrons, muons, taus, charm and b- quarks. These will provide measurements with precisions matching or exceeding current world averages precisions the Z0-pole, but at 10GeV and thereby providing unique probes the running of the weak mixing angle from diVerent fermions and with high precision. Chiral Belle will also provide the highest precision measurements of neutral current universality ratios, precision measurements of tau lepton properties, including the tau magnetic moment and Michel parameters. This presentation review developments on the physics potential and then report on developments related to provision of the polarized source and preparatory R&D initiatives
