The CMR method combined with Green's functions provides a unified description of DD* exotic hadron states, identifying G(3900) as a P-wave resonance and extracting its scattering phase shifts and cross sections.
By comparison, the cutoff parame- ters without the contact term δare all around 1.0 GeV with smaller variations, which appears better suited to describ e hadronic molecular states
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Study of exotic hadron states in the $DD^{*}$ system via the complex momentum representation and Green's function method
The CMR method combined with Green's functions provides a unified description of DD* exotic hadron states, identifying G(3900) as a P-wave resonance and extracting its scattering phase shifts and cross sections.