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Complex amplitude phase motion in Dalitz plot heavy meson three body decay

Ignacio Bediaga·Jussara M. de Miranda
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Abstract

We propose a method to determine the phase motion of a complex amplitude in three body heavy meson decays. We show that the phase variation of a complex amplitude can be directly revealed through the interference observed in the Dalitz Plot region where it crosses with a well established resonant state. This method could be applied to the decays \d3pi and $D^+\to K^-π^+π^+$, to determine whether the low mass states $σ$ and $κ$, suggested by E791, have phase motions compatible with resonances.

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Ignacio Bediaga, Jussara M. de Miranda. 2002-11-06. Complex amplitude phase motion in Dalitz plot heavy meson three body decay. https://doi.org/10.1016/s0370-2693(02)02983-0

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