Getting a grip on quark mixing: Physicists introduce framework to determine amount of mixing between up and down quarks

The quarks that make up the nuclei of all atoms around us are known to "mix": the different types of quark occasionally change into one another. The amounts in which these processes happen are not very well known, though--and the theoretical values don't even add up to 100%. UvA-IoP physicist Jordy de Vries and colleagues from Los Alamos, Seattle, and Bern have now published work that takes a step towards solving these mysteries.