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arXiv · 0710.5855

Role of t-channel meson exchange in S-wave pi N and K N scattering

Feng-Quan Wu·Bing-Song Zou
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Abstract

The low-energy S-wave pi N and K N scatterings are studied by the K-matrix approach within the meson exchange framework. The t-channel meson exchanges, especially rho and sigma exchanges, are found to play a very important role in these two processes. The t-channel rho exchange determines the isospin structure of the scattering amplitudes, it gives attractive force in the low isospin state but repulsive force in the high isospin state. The t-channel sigma exchange gives a very large contribution in these two processes, while it is negligible in meson-meson S-wave scatterings.

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Feng-Quan Wu, Bing-Song Zou. 2007-10-31. Role of t-channel meson exchange in S-wave pi N and K N scattering. https://doi.org/10.1088/1674-1137/32/8/008

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