Scientists have performed a new, more sensitive measurement of beta decay properties to hunt for a theorized feature of the weak nuclear force not currently included in the Standard Model.

Beta (\(\beta^-\)) decay is the release of an electron by the ... This difference in charge (\(+1\)) is conserved by the weak force boson \(W^{-}\). The new up quark moves away from the emitted ...

Here is the equation for the alpha decay of radon-219 into polonium. Beta decay involves the conversion of a down quark to an up quark. This changes a neutron into a proton plus an electron.