documentclass{article}
usepackage{amsmath}
usepackage{axodraw2}
usepackage{slashed}
usepackage{amsmath}

begin{document}

begin{figure}
includegraphics[scale=0.5]{lightcone}
end{figure}

begin{center}
begin{axopicture}(130,150)
SetColor{Black}
Text(70,130){begin{small}$Im{p^0}$end{small}}
Text(180,30){begin{small}$Re{p^0}$end{small}}
Text(45,40){$times$}
Text(95,20){$times$}
Text(130,90){$Gamma$}
Arc[arrow](70,27)(80,0,90)
Arc[arrow](70,27)(80,90,180)
Line[arrow](-10,27)(70,27)
Line[arrow](70,27)(150,27)
SetWidth{2}
LongArrow[arrowscale=0.8](70,20)(70,120)
LongArrow[arrowscale=0.8](-20,30)(160,30)
end{axopicture}
end{center}

end{document}

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