Cusp formation and threshold effects in break-up collisions

Barrachina, R. O.; Fiol, J.; Rodrı´guez, V. D.; Macri, P.
February 2000
AIP Conference Proceedings;2000, Vol. 500 Issue 1, p510
Academic Journal
We show how the single-particle double differential cross sections (DDCS) in breakup collisions are intertwined by dynamical constraints. In particular, we study the corresponding relations among threshold and cusp structures and identify some of their properties by means of a final-state interaction theory. We provide general expressions for the cusp and threshold structures that any theoretical description of the collision process has to fulfil. Finally, we show how these structures change with the relative mass ratios of the three particles in the final state. © 2000 American Institute of Physics.


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