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arXiv · 1106.1185

Interplay of quark and meson degrees of freedom in a near-threshold resonance: multi-channel case

C. Hanhart·Yu. S. Kalashnikova·A. V. Nefediev
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Abstract

We investigate the interplay of quark and meson degrees of freedom in a physical state representing a near-threshold resonance for the case of multiple continuum channels. The aim is to demonstrate the full complexity of near-threshold phenomena. It turns out that those are especially rich, if both quark and meson dynamics generate simultaneously weakly coupled near-threshold poles in the S-matrix. We study the properties of this scenario in detail, such as t-matrix and production amplitude zeros, as well as various effects of the continuum channels interplay.

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C. Hanhart, Yu. S. Kalashnikova, A. V. Nefediev. 2011-06-06. Interplay of quark and meson degrees of freedom in a near-threshold resonance: multi-channel case. https://doi.org/10.1140/epja/i2011-11101-9

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