Journal
PHYSICAL REVIEW D
Volume 106, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.094031
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A refined investigation on light flavor meson-baryon scatterings was conducted using a dynamical coupled-channel approach. The study extended the channel space and extracted the spectra of N* and Delta resonances, as well as questioning the existence of bound states of the omega meson in nuclear matter through the extraction of a negative value of the omega N elastic spin-averaged scattering length.
A refined investigation on light flavor meson-baryon scatterings is performed using a dynamical coupled-channel approach, the Julich-Bonn model, that respects unitarity and analyticity constraints. The channel space of pi N, pi Delta, sigma N,rho N,eta N, K Lambda, and K Sigma is extended by adding the.N final state. The spectra of N* and Delta resonances are extracted in terms of complex poles of the scattering amplitudes, based on the result of a global fit to a worldwide collection of data, in the energy region from the pi N threshold to centerof-mass energy z = 2.3 GeV. A negative value of the omega N elastic spin-averaged scattering length is extracted, questioning the existence of bound states of the omega meson in the nuclear matter.
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