Hexadecagon

Template:Unreferenced stub The Charged current interaction is one of the ways in which subatomic particles can interact by means of the weak force. It is mediated by the [[W and Z bosons|Template:SubatomicParticle and Template:SubatomicParticle bosons]].

The interaction is often incorrectly believed to be called 'charged' because the W bosons have electric charge. However, the charged current that gives the interaction its name is that of the interacting particles. For example, the charged-current contribution to the Template:SubatomicParticleTemplate:SubatomicParticle → Template:SubatomicParticleTemplate:SubatomicParticle elastic scattering amplitude

${\mathfrak{M}}^{\mathrm{C}\mathrm{C}}\propto J_{\mu }^{\mathrm{(}\mathrm{C}\mathrm{C}\mathrm{)}}({\mathrm{e}}^{\mathrm{-}}\to {\nu }_{\mathrm{e}})J^{\mathrm{(}\mathrm{C}\mathrm{C}\mathrm{)}\mu }({\nu }_{\mathrm{e}}\to {\mathrm{e}}^{\mathrm{-}})$

where the charged currents describing the flow of one fermion into the other are given by

$J^{\mathrm{(}\mathrm{C}\mathrm{C}\mathrm{)}\mathrm{\mu }}(f\to f^{\prime })={\overline{u}}_{f^{\prime }}{\gamma }^{\mu }\frac{1}{2}(1-{\gamma }^5)u_f.$

See also

• Neutral current

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