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arXiv · hep-ph/9906249

Structure of the Light Scalar Mesons from a Coupled Channel Analysis of the s-wave pi pi - k kbar Scattering

V. E. Markushin·M. P. Locher
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Abstract

The analysis of the poles of the $ππ$ scattering amplitude is shown to favour a dynamical origin of the sigma meson: it is created by a strongly attractive $ππ$ interaction in the $J^{PC}=0^{++}I=0$ channel. In the limit $N_c\to\infty$, the $σ$ meson disappears, contrary to the case of conventional $q\bar{q}$ states. Implications for the search of the scalar $q\bar{q}$ and glueball states are discussed.

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V. E. Markushin, M. P. Locher. 1999-06-04. Structure of the Light Scalar Mesons from a Coupled Channel Analysis of the s-wave pi pi - k kbar Scattering. https://arxiv.org/abs/hep-ph/9906249

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