\begin{document}$ p_T $\end{document}) particle production is suppressed owing to the parton (jet) energy loss in the hot dense medium created in relativistic heavy-ion collisions. Redistribution of energy at low-to-modest \begin{document}$ p_T $\end{document} has been difficult to measure, owing to large anisotropic backgrounds. We report a data-driven method for background evaluation and subtraction, exploiting the away-side pseudorapidity gaps, to measure the jetlike correlation shape in Au+Au collisions at \begin{document}$\sqrt{s_{{NN}}} = 200$\end{document} GeV in the STAR experiment. The correlation shapes, for trigger particles \begin{document}$ p_T>3\;{\rm{GeV}}/{\rm{c}} $\end{document} and various associated particle \begin{document}$ p_T $\end{document} ranges within \begin{document}$ 0.5<p_T<10\;{\rm{GeV}}/{\rm{c}} $\end{document}, are consistent with Gaussians, and their widths increase with centrality. The results indicate jet broadening in the medium created in central heavy-ion collisions."> Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at <inline-formula><tex-math id="M1-2">\begin{document}${{\sqrt{s_{NN}} = 200}}$\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/bc640351-ffa8-4055-8ef1-f18b264957b0/CPC-2020-0145_M1-2.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/bc640351-ffa8-4055-8ef1-f18b264957b0/CPC-2020-0145_M1-2.png"/></alternatives></inline-formula> GeV -
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