Fig. 4.

Fraction of reconstructed pile-up jets classified as QCD pile-up jets, as a function of a $|\mathit{\eta }|$, b $p_{\text{T}}$, and c $⟨\mathit{\mu }⟩$ for jets with $20\text{GeV}<p_{\text{T}}<30\text{GeV}$ and d $30\text{GeV}<p_{\text{T}}<40\text{GeV}$, as estimated in dijet events with Pythia8.186 pile-up simulation