Applications of the Electroweak Theory

Abstract

The weak decay processes known from early times are all described by charged-current interactions. As given in (2.6), the charged current is the sum of leptonic and hadronic currents:

$${J_\mu } = J_{_\mu }^{(l)} + J_{_\mu }^{(h)} $$

((3.1))

, where

$$J_{_\mu }^{(l)} = \overline {{v_e}} {\gamma _\mu }(1 - {\gamma _5}){e^ - } + \overline {{v_\mu }} {\gamma _\mu }(1 - {\gamma _5}){\mu ^ - } + \overline {{v_\tau }} {\gamma _\mu }(1 - {\gamma _5}){\tau ^ - }$$

((3.2))

and

$$J_{_\mu }^{(h)} = (\overline u ,\overline c ,\overline t ){U_q}{\gamma _\mu }(1 - {\gamma _5})(\begin{array}{*{20}{c}} d \\ s \\ b \\ \end{array} ) $$

((3.3))

.