  In this work, we reinterpret ATLAS and CMS dijet resonance searches to set
robust constraints on all hypothetical tree-level scalar and vector mediators
with masses up to 5 TeV, assuming a diquark or a quark-antiquark coupling with
an arbitrary flavor composition. To illustrate the application of these general
results, we quantify the permissible size of new physics in $\bar B_q\to
D_q^{(*)+} \,\{\pi, K\}$ consistent with the absence of signal in dijet
resonance searches. Along the way, we perform a full SMEFT analysis of the
aforementioned non-leptonic $B$ meson decays at leading-order in $\alpha_s$.
Our findings uncover a pressing tension between the new physics explanations of
recently reported anomalies in these decays and the dijet resonant searches.
The high-$p_T$ constraints are crucial to drain the parameter space consistent
with the low-$p_T$ flavor physics data.
