Distinction between sequential and direct three-body decays.
We discuss the three-body decay mechanisms of many-body resonances. Sequential decays proceed via two-body configurations after emission of the third particle. In direct decay all three particles leave their interaction regions simultaneously. The intermediate paths within the interaction regions are not observables and are only accessible through models. The momentum distributions carry, apart from polarization, all possible information about decay modes and resonance structure. In this context we discuss detailed results for the decay of the (9)Be(5/2(-)) resonance.
Department of Physics and Astronomy, University of Aarhus, Aarhus C, Denmark.
R
R
Alvarez-Rodríguez
H O U
HO
Fynbo
A S
AS
Jensen
E
E
Garrido