Figure 3

Ratio between the mean rigidity $\mathcal{h}p/z\mathcal{i}$ and the rigidity at the primary vertex $(p/z)_{\rm{vtx}}$as a function of initial $\beta\gamma=p_{\rm{vtx}}/mc$for deuteron (red filled points) and $^{3}\rm{He}$ (green open points)obtained in the Monte Carlo with the detector simulation. The coloured lines indicate the corresponding parameterizations