P-wave pi pi amplitude from dispersion relations
classification
✦ hep-ph
hep-exnucl-ex
keywords
amplitudedispersiongenericp-waveamplitudesanalyticalapplicabilitycastillejo-dalitz-dyson
read the original abstract
We solve the dispersion relation for the P-wave pi pi amplitude.We discuss the role of the left hand cut vs Castillejo-Dalitz-Dyson (CDD), pole contribution and compare the solution with a generic quark model description. We review the the generic properties of analytical partial wave scattering and production amplitudes and discuses their applicability and fits of experimental data.
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