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Evidence for three nucleon force effects in p−d elastic scattering

A. Kievsky1,2, M. H. Wood2, C. R. Brune2, B. M. Fisher2, H. J. Karwowski2, D. S. Leonard2, E. J. Ludwig2, S. Rosati1,3, and M. Viviani1

  • 1Istituto Nazionale di Fisica Nucleare, Via Buonarroti 2, I-56100 Pisa, Italy
  • 2Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708
  • 3Department of Physics, University of Pisa, I-56100 Pisa, Italy

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Phys. Rev. C 63, 024005 – Published 24 January, 2001

DOI: https://doi.org/10.1103/PhysRevC.63.024005

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 χ2 analysis. The χ2 per datum drastically improves when the three-nucleon interaction is included in the Hamiltonian.

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Phys. Rev. C 63, 024005– Published 24 January, 2001
  • Received 18 July 2000

© 2001 American Physical Society

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