26-31 July 2021
Mexico City
Mexico/General timezone
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Mexico City -
Analysis Tools

Multibody decay analyses tool: A phenomenological model for meson-meson subamplitudes


  • Dr. Patricia MAGALHAES

Primary authors



In this work, we propose a new phenomenological model suited to all SU(3) mesonic two-body final-state interactions up to energies around 2 GeV to replace the isobar model. We show that the new model provides a clear indication of the mechanism responsible for the sharp rise observed in the ππ phase around 1 GeV. The phenomenological amplitudes proposed here are suited to any number of resonances, incorporate chiral symmetry at low energies, include coupled channels, and respect unitarity.