Nuisance parameters from the analysis of 1000 mock data for Model A (top panels) and Model B (bottom panels). The nuisance parameters are shown reaction by reaction (rows: production then inelastic cross sections), each reaction having two nuisance parameters (see list in Table 2). The number in parenthesis beside the reaction corresponds to its overall impact on the B/C calculation, as reported in Table 1. We show for the NSS analysis (left panels) normalised and centred parameters, whereas LC analysis (right panels) are shown between zero and one. We use violin plots to highlight the probability density of the parameter (y-axis) at different values (x-axis), and our violin plots include a marker for the median (black “+” symbol) along with the 1σ range of the parameter (thick black line). In order to directly compare the distribution of the nuisance parameters for the unbiased and biased analyses, we superimpose them on the same line in red and blue respectively. See text for discussion.