Improving CKM Unitarity Limits via Low-Energy Nuclear Physics
by
Paul Finlay(KU Leuven)
→
Europe/Zurich
CERN
CERN
Description
If the current three-generation standard model is complete, then the Cabibbo-Kobayashi-Maskawa matrix, which relates the mass and weak-interaction eigenstate of the quarks, should be unitary. The strictest test of unitarity currently comes from the top-row sum, with the most precise value for the largest element, Vud, coming from superallowed Fermi beta decays. The primary challenge towards future progress in CKM unitarity tests lies with understanding the theoretical isospin-symmetry-breaking (ISB) corrections, which currently dominate the uncertainty in the superallowed Ft values. Experimental input for the improvement of these calculations is possible, and this seminar will highlight some current and proposed low-energy nuclear physics experiments aiming to contribute to the understanding and refinement of the ISB corrections.
