In quarks, the strength of this interaction is governed by the Cabibbo angle. One mechanism governed by this interaction can couple to any non-gluon particle; that neutral current interaction provides the mechanism for scattering of neutrinos by ordinary matter. This interaction can change the flavor of quarks - in other words, it is responsible for the conversion of quarks into other types of quarks, which is seen in beta decay. This force is mediated by the W and Z bosons. For 10 points, name 
In quarks, the strength of this interaction is governed by the Cabibbo angle. One mechanism governed by this interaction can couple to any non-gluon particle; that neutral current interaction provides the mechanism for scattering of neutrinos by ordinary matter. This interaction can change the flavor of quarks - in other words, it is responsible for the conversion of quarks into other types of quarks, which is seen in beta decay. This force is mediated by the W and Z bosons. For 10 points, name this fundamental force that at high energies merges with the electromagnetic force.
In quarks, the strength of this interaction is governed by the Cabibbo angle.
the {weak} force [or {weak} interaction; prompt on {electroweak}]