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Figure 1

. Illustration of $\vjt{}$ and $\xlong$. The jet fragmentation transverse momentum, $\vjt{}$, is defined as the transverse momentum component of the associated particle momentum, $\vec{p}_{\mathrm{a}}$, with respect to the trigger particle momentum, $\vec{p}_{\mathrm{t}}$. The fragmentation variable $\xlong$ is the projection of $\vec{p}_{\mathrm{a}}$ to $\vec{p}_{\mathrm{t}}$ divided by $p_{\mathrm{t}}$.
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