  In relativistic heavy-ion collisions, a hot and dense state of matter, called
the Quark-Gluon Plasma (QGP), is produced. Semi-inclusive jets recoiling from
trigger hadrons of high transverse momenta ($p_{\mathrm{T}}$) can serve as an
effective probe of the QGP properties, as they are expected to experience jet
quenching when traversing the QGP. Recent experimental results on the ratio of
recoil jet yields normalized by the trigger counts in heavy-ion collisions to
that in $p$+$p$ collisions ($I_{\mathrm{AA}}$) pose an unexpected challenge in
its interpretation. It is observed that $I_{\mathrm{AA}}$ rises with the jet
$p_{\mathrm{T}}$ and possibly exceeds unity at high $p_{\mathrm{T}}$, while
traditionally it is expected that jet quenching would lead to $I_{\mathrm{AA}}
< 1$. To address this challenge, we utilize the Linear Boltzmann Transport
(LBT) model to simulate jet transport in the QGP, and study the effect of jet
quenching for high-$p_{\mathrm{T}}$ triggers and recoil jets separately on
$I_{\mathrm{AA}}$. We find that the quenching of the colored triggers alone is
responsible for the rising trend and larger-than-unity value observed
experimentally.
