arXiv:nucl-th/0012016·v1·Nuclear Theory
Evidence for Three Nucleon Force Effects in p-d Elastic Scattering
A. Kievsky🇮🇹 · M.H. Wood🇺🇸 · C.R. Brune🇺🇸 · B.M. Fisher🇺🇸 · H.J. Karwowski🇺🇸 · D.S. Leonard🇺🇸 · E.J. Ludwig🇺🇸 · S. Rosati🇮🇹 · M. Viviani🇮🇹
Abstract
A new measurement of the p-d differential cross section at Ep= 1 MeV has been performed. These new data and older data sets at energies below the deuteron breakup are compared to calculations using the two-nucleon Argonne v18 and the three-nucleon Urbana IX potentials. A quantitative estimate of the capability of these interactions to describe the data is given in terms of a chi^2 analysis. The chi^2 per datum drastically improves when the three-nucleon interaction is included in the Hamiltonian.
Comments: 13 pages, 5 figures, to be published in Phys. Rev. C