Distinction between sequential and direct three-body decays

Details Distinction between sequential and direct three-body decays Distinction between sequential and direct three-body decays

2008-04-22

arxiv.org/abs/0804.3608v1

Phys.Rev.Lett.100:192501,2008

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures. Accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.100.192501

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 simultaneously their interaction regions. The intermediate paths within the interaction regions are not observables and 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.

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