\documentclass[12pt]{article}

\usepackage{gamelan}
\usepackage{amsmath}

\begin{document}
\begin{gmlfile}

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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\noindent\textbf{\large\texttt{WHIZARD} data analysis}\hfill\today
\begin{flushleft}
\textbf{Process:} 
  \verb|sw_l0tau| ($ e^- e^+ \to \nu_\tau \tau^+ e^- \bar\nu_e$)
, $ e^- e^+ \to \bar\nu_\tau \tau^- e^+ \nu_e$)
\\
\end{flushleft}
%
\begin{displaymath}
  \sqrt{s} =   500.0    \;\textrm{GeV}\qquad
  \int\mathcal{L} =   500.0    \;\textrm{fb}^{-1}
\end{displaymath}
%
\begin{align*}
  \sigma_{\rm tot} &=   125.77     \quad \pm  0.272    \;\textrm{fb}
   \quad [\pm    0.22\;\%]
 & n_{\rm evt,\ tot} &=        62745
 \\
  \sigma_{\rm cut} &=   125.77     \quad \pm  0.502    \;\textrm{fb}
   \quad [\pm    0.40\;\%]
 & n_{\rm evt,\ cut} &=        62745  \quad 
  [  100.00 \;\%]
\end{align*}
%
%
\newpage
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\noindent\textbf{\large\texttt{WHIZARD} data analysis}\hfill\today
\begin{flushleft}
\textbf{Process:} 
  \verb|sw_l0mu| ($ e^- e^+ \to \nu_\mu \mu^+ e^- \bar\nu_e$)
, $ e^- e^+ \to \bar\nu_\mu \mu^- e^+ \nu_e$)
\\
\end{flushleft}
%
\begin{displaymath}
  \sqrt{s} =   500.0    \;\textrm{GeV}\qquad
  \int\mathcal{L} =   500.0    \;\textrm{fb}^{-1}
\end{displaymath}
%
\begin{align*}
  \sigma_{\rm tot} &=   126.23     \quad \pm  0.275    \;\textrm{fb}
   \quad [\pm    0.22\;\%]
 & n_{\rm evt,\ tot} &=        63256
 \\
  \sigma_{\rm cut} &=   126.23     \quad \pm  0.502    \;\textrm{fb}
   \quad [\pm    0.40\;\%]
 & n_{\rm evt,\ cut} &=        63256  \quad 
  [  100.00 \;\%]
\end{align*}
%
%

\end{gmlfile}
\end{document}
