More on 5d Wilson Loops in Higher-Rank Theories and Blowup Equations

In this article, we further explore the construction and computation of expectation values for Wilson loops in higher-rank 5d $\mathcal{N}=1$ gauge theories on ${\mathbb{C}}_2\times S_1$, by explicitly computing the Wilson loops via Chern-character insertion and qq-characters, including cases with the exceptional gauge group $G_2$. In particular, we propose a systematic way to write down the general blowup equations for Wilson loops by using the constraints from the one-form symmetry and low-instanton data from the instanton partition function. In addition, for one-instanton contributions in a large family of Wilson loop representations, we observe that they admit a $q_1{q}_2$-expansion, similar to the Hilbert-series structure of instanton partitions in pure gauge theories.