Limits for Excited ${{\boldsymbol q}}$ (${{\boldsymbol q}^{*}}$) from Pair Production
INSPIRE search
These limits are mostly obtained from ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit q}^{*}}{{\overline{\mathit q}}^{*}}$ and thus rely only on the (electroweak) charge of the ${{\mathit q}^{*}}$. Form factor effects are ignored unless noted. Assumptions about the ${{\mathit q}^{*}}$ decay are given in the comments and footnotes.