PPT Slide
where BW (1 2 | r ) is a Breit-Wigner function:
where p1 and p3 are the momenta of the particles 1 and 3
in the system (1, 2), q13 is the angle between 1 and 3 in
the system (1, 2) (helicity angle). FD and Fr factorize
the strong coupling at each vertex of the diagram. For every resonance with mass M r and spin j we can define
where Go is the PDG width for the resonance, p is the
momentum of the particle in the system (1, 2), p0 is
the momentum in the system where the resonance is
The Dalitz Plot fit formalism: amplitude parameterization