Relation between ${\sin }^2{\hat{\theta }}_W(m_Z)$ and ${\sin }^2{\theta }_{eff}^{lep}$

P. Gambino, A. Sirlin

The relation between $\sef$, frequently employed in LEP analyses, and the $\overline{\mathrm{MS}}$--parameter $\scr$ is discussed and their difference evaluated by means of an explicit…