Chapter 12 Fit QC3

minimizing the \(\chi^2\) \[ \chi^2 =\sum_i \frac{(E_3^{predicted} -E_3^{measured} )}{\sigma^2} \] the predicted energy is the solution of the three particles quantization condition in the isotropic approximation \[ F_3^{iso}(E,\vec P,L)=-1/K^{iso}_3(E^*)\, \] \(F_3\) depend on the result of the two particle phase shift \(\delta\) computed before and \(K_3^{iso}\) is parametrised as

\[ K_3^{iso}= K^0_3+ \Delta K^1_3 \] with \(\Delta=(E_{cm}^2 -9 m^2)\)

\(T\) \(L\) \(E_3/m\) err
32 24 3.18188 0.01900420
32 28 3.11606 0.01504940
32 30 3.08234 0.00984515
32 32 3.06695 0.02354710
32 36 3.03299 0.00928475