a single quadrant describes the spatial energy distribution. Inspecting this figure one learns that the predictions from both models are rather different, indicating that the effective seagull is very important. In the linear approach, the interaction is attractive over a wide region, whereas the non-linear scalar produces a repulsion around the triangular configuration and these differences should show up in observables.

One is aware that a study based on just S trinucleon waves can provide only rough indications, since it is well known that D waves do play an important role in trinucleons. Nevertheless, in the absence of a detailed study, we may assume that the trends associated with our equipotential plots would reflect in the binding energy. This assumption is supported by the results of ref.[[@CPR]]{} where a three-body force given by our eq.(22) with $\lambda=1$ was shown to produce a decrease of the binding energy which is rather welcome.

As a final comment, it is important to point out that the discussion presented in section 3 makes us to be biased towards the chiral scalar, but final conclusions must wait until a complete evaluation of the diagrams of fig 2c, which is now in progress.

The work of 