
\documentclass[border=5pt,multi=true]{standalone}
\usepackage{standalone}
\usepackage{ifthen}
\usepackage{rotating}
\usepackage{multirow}
\usepackage{graphpap}
\usepackage{microtype}
\usepackage{lineno}
\usepackage{xspace}
\usepackage{graphicx}
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\usepackage{amsmath}
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\usepackage{upgreek}
\usepackage{hyperref}
\usepackage{hypcap}
\usepackage{cite}
\usepackage{mciteplus}


\graphicspath{{./figs/}}

\begin{document}
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  \centering
  \begin{picture}(150,170)
    \put(0,120){
      \includegraphics*[width=75mm,height = 60mm%
      ]{figs/Fig5a.pdf}
    }
    \put(75,120){
      \includegraphics*[width=75mm,height = 60mm%
      ]{figs/Fig5b.pdf}
    }
    \put(0,60){
      \includegraphics*[width=75mm,height = 60mm%
      ]{figs/Fig5c.pdf}
    }
    \put(75,60){
      \includegraphics*[width=75mm,height = 60mm%
      ]{figs/Fig5d.pdf}
    }
    \put(0,0){
      \includegraphics*[width=75mm,height = 60mm%
      ]{figs/Fig5e.pdf}
    }
    \put(75,0){
      \includegraphics*[width=75mm,height = 60mm%
      ]{figs/Fig5f.pdf}
    }
    \put(15,165) {\small (a)  } 
    \put(15,170) {\small $\ensuremath{\eta}\xspace \ensuremath{\rightarrow}\xspace \ensuremath{\ensuremath{\gamma}\xspace}\xspace\ensuremath{\ensuremath{\gamma}\xspace}\xspace$  } 
    \put(55,170) { LHCb  } 
    \put(37,121) {\small $\mathrm{m}_{\ensuremath{\ensuremath{\gamma}\xspace}\xspace\ensuremath{\ensuremath{\gamma}\xspace}\xspace}$ }
    \put(57,121)  {\small $\left[ \mathrm{MeV}/c^2\right]$}
    \put(0,133)  { 
      \begin{sideways}%
        {\small Candidates/$\left(10~\mathrm{MeV}/c^2\right)$}
      \end{sideways}%
    }
    \put(90,165) {\small (b)  } 
    \put(90,170) {\small $\ensuremath{\eta}\xspace \ensuremath{\rightarrow}\xspace \ensuremath{\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^+\ensuremath{\ensuremath{\pi}\xspace}\xspace^-}\xspace{}\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^0}\xspace}\xspace$  } 
    \put(130,170) { LHCb  } 
    \put(112,121) {\small $\mathrm{m}_{\ensuremath{\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^+\ensuremath{\ensuremath{\pi}\xspace}\xspace^-}\xspace{}\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^0}\xspace}\xspace}$ }
    \put(132,121)  {\small $\left[ \mathrm{MeV}/c^2\right]$}
    \put(76,133)  { 
      \begin{sideways}%
        {\small Candidates/$\left(10~\mathrm{MeV}/c^2\right)$}
      \end{sideways}%
    }
    \put(15,105) {\small (c)  } 
    \put(15,110) {\small $\ensuremath{\eta}\xspace^{\prime} \ensuremath{\rightarrow}\xspace \ensuremath{\rho}\xspace^0\ensuremath{\ensuremath{\gamma}\xspace}\xspace$  } 
    \put(55,110) { LHCb  } 
    \put(37,61) {\small $\mathrm{m}_{\ensuremath{\rho}\xspace^0\ensuremath{\ensuremath{\gamma}\xspace}\xspace}$  }
    \put(57,61)  {\small $\left[ \mathrm{MeV}/c^2\right]$}
    \put(0,73)  { 
      \begin{sideways}%
        {\small Candidates/$\left(20~\mathrm{MeV}/c^2 \right)$}
      \end{sideways}%
    }
    \put(90,105) {\small (d)  } 
    \put(90,110) {\small $\ensuremath{\rho}\xspace^0 \ensuremath{\rightarrow}\xspace \ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^+\ensuremath{\ensuremath{\pi}\xspace}\xspace^-}\xspace$  } 
    \put(130,110) { LHCb  } 
    \put(112,61) {\small $\mathrm{m}_{\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^+\ensuremath{\ensuremath{\pi}\xspace}\xspace^-}\xspace}$  }
    \put(132,61)  {\small $\left[ \mathrm{MeV}/c^2\right]$}
    \put(75,73)  { 
      \begin{sideways}%
        {\small Candidates/$\left(45~\mathrm{MeV}/c^2\right)$}
      \end{sideways}%
    }
    \put(15,45) {\small (e)  } 
    \put(15,50) {\small $\ensuremath{\eta}\xspace^{\prime} \ensuremath{\rightarrow}\xspace \ensuremath{\eta}\xspace\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^+\ensuremath{\ensuremath{\pi}\xspace}\xspace^-}\xspace$  } 
    \put(55,50) { LHCb  } 
    \put(37,1) {\small $\mathrm{m}_{\ensuremath{\eta}\xspace\ensuremath{\ensuremath{\ensuremath{\pi}\xspace}\xspace^+\ensuremath{\ensuremath{\pi}\xspace}\xspace^-}\xspace}$  }
    \put(57,1)  {\small $\left[ \mathrm{MeV}/c^2\right]$}
    \put(0,13)  { 
      \begin{sideways}%
        {\small Candidates/$\left(20~\mathrm{MeV}/c^2 \right)$}
      \end{sideways}%
    }
    \put(90,45) {\small (f)  } 
    \put(90,50) {\small $\ensuremath{\eta}\xspace \ensuremath{\rightarrow}\xspace \ensuremath{\ensuremath{\ensuremath{\gamma}\xspace}\xspace{}\ensuremath{\ensuremath{\gamma}\xspace}\xspace}\xspace$  } 
    \put(130,50) { LHCb  } 
    \put(112,1) {\small $\mathrm{m}_{\ensuremath{\ensuremath{\ensuremath{\gamma}\xspace}\xspace{}\ensuremath{\ensuremath{\gamma}\xspace}\xspace}\xspace}$ }
    \put(132,1)  {\small $\left[ \mathrm{MeV}/c^2\right]$}
    \put(76,13)  { 
      \begin{sideways}%
        {\small Candidates/$\left(20~\mathrm{MeV}/c^2\right)$}
      \end{sideways}%
    }
  \end{picture}
\end{document}
