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Charlotte Elster

Ohio University
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Three-Body Scattering at Intermediate Energies

An enormous effort has been made to understand and model the nuclear
force. Since the early 1990'ies realistic models of the nuclear force
are available, describing the NN data with high accuracy. Especially
during the last years considerable progress has been made in deriving
the nuclear force in the context of effective field theories. The next
step is to apply those models in an environment where three (or four)
nucleons interact with each other and thoroughly test underlying
assumptions of nuclear physics.

Successes and and failures in the description of three nucleon
scattering in the low energy regime will be illustrated in a few
examples, and an alternative approach to the conventional
state-of-the-art calculations, which are carried out in an a partial
wave truncated basis, will be illustrated. As examples for this
alternative formulation, which is not limited by partial wave
truncations, elastic and break-up processes in the intermediate energy
regime involving scalar particles are given. Special emphasis is
placed on a study of the convergence of the multiple scattering series
as function of energy when considering different observables.

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