Within the hyperspherical harmonics (HH) method the three-body problem is reduced to a motion of one effective particle in a “strongly deformed” field, which is described in the coupled-channel formalism. This method is well suited to studies of so-called true three-body decays. The reduction of the hyperspherical equations set to a single-channel approximation provides the basis of standard quasi-classical (QC) expression for width evaluation. We demonstrate that by itself the quasi-classical approach is quite precise in application to typical three-body effective potentials. However, the reduction to a single channel leads to a significant overestimation of the width.
CITATION STYLE
Sukhareva, O. M., Grigorenko, L. V., Kostyleva, D. A., & Zhukov, M. V. (2020). Validity of Quasi-classical Approaches to True Three-Body Decays. In Springer Proceedings in Physics (Vol. 238, pp. 283–286). Springer. https://doi.org/10.1007/978-3-030-32357-8_50
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