The $p(d,d^{\prime })$ Reaction and the $\sigma N{N}^{\ast }(1440)$ Coupling Constant

B. Julia-Diaz, A. Valcarce, F. Fernandez

We make use of a $NN\to N{N}^{\ast }(1440)$ transition potential derived from a quark-model in a parameter-free way, to study the Roper excitation diagram contributing to the reaction $p(…