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10 lines
608 B
10 lines
608 B
\midheading{$e^- \bar{\nu}_{e} \mu^- \bar{\nu}_{\mu} $-pair production via WBF, processes 229,2291}
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The {\it weak} process ({\tt nproc=229}) occurs in $O(\alpha^6)$,
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whereas the {\it strong} process occurs ({\tt nproc=2291}) in $O(\alpha^4 \alpha_S^2)$.
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These processes can currently only be calculated at lowest order.
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\begin{eqnarray}
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& 229 & f(p_1)+f(p_2) \to W^-(e^-(p_3),\bar{\nu}_e(p_4)))W^+(\mu^-(p_5),\bar{\nu}_\mu(p_6))+f(p_7)+f(p_8) [WBF]
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\nonumber \\
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&2291 & f(p_1)+f(p_2) \to W^-(e^-(p_3),\bar{\nu}_e(p_4)))W^-(\mu^-(p_5),\bar{\nu}_\mu(p_6))+f(p_7)+f(p_8) [strong]
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\nonumber
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\end{eqnarray}
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