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On-shell prescription in three-particle scattering

Journal Article · · Phys. Rev., D; (United States)
The scattering of three identical particles initiated from a particle incident on a bound state is considered. A prescription is suggested for approximate evaluation of the physical amplitude in terms of on-shell and half-on-shell two-particle amplitudes adopting the first-order Alt-Grassberger-Sandhas perturbation treatment. The half-on-shell two-particle amplitudes can in turn be given in terms of their on-shell versions and the knowledge of two-particle interactions using the Kowalski-Noyes prescription. Sloan's first-order unitary model is also considered. Using our prescription, it is shown that with such a model, the elastic and rearrangement amplitudes are completely determined from on-shell two-particle amplitudes, while for the break-up process, half-on-shell two-particle amplitudes inevitably appear.
Research Organization:
Atomic Energy Establishment, Tripoli-Libya
OSTI ID:
7281344
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 16:4; ISSN PRVDA
Country of Publication:
United States
Language:
English