近藤さま、

私がよく使う方法は、

headerで、

\usepackage{multicol}


をincludeして、本文中で、


\begin{figure}[hptb]
\begin{multicols}{2}
\begin{center}
\includegraphics[width=7cm, angle=0]{JetNBeforeForwJetCut.eps}
\end{center}
\caption{Jet multiplicity distibution for the signal and $t\bar{t}$ background after requiring
the cuts up to the collinear approximation level in the list of cuts for the $lh$ channel (see Table~\ref{tab:accsiglh}).
}
\label{fig:njet}
\begin{center}
\includegraphics[width=7cm]{Dim_fig6update.eps}
\end{center}
\caption{Rejection versus signal sensitivity for the central jet veto with various optimizations.  Samples with pileup have no markers, samples without pileup have markers.
}
\label{fig:cjvopt}
\end{multicols}
\end{figure}

です。multicol.styは、googleで引っ掛ければ見つかるかと思います。


ご参考まで。
津野