Fig. 24.

Ratios of differential cross sections in ${\phi }_{\eta }^{\ast }(\ell \ell )$ for invariant $m_{\ell \ell }$ with respect to the peak region $76<m_{\ell \ell }<106\text{Ge}\text{V}$. Compared to model predictions from Geneva-$\tau$ (left) and Geneva-$q_{\text{T}}$ (right). Details on the presentation of the results are given in Fig. 8 caption