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arXiv · hep-ph/9709470

Sigma Signal for Hybrid Baryon Decay

Leonard S. Kisslinger·Zhenping Li
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Abstract

We develop an ansatze of the sigma enhancement of the I=0, L=0 $π$-$π$ scattering amplitude as arising from a low-energy glueball pole. Using this picture we estimate the $π^0π^0$ to $π^0$ branching ratio for the decays of the Roper resonance, which we previously found to be a hybrid in our QCD sum rule calculation. We find that the sigma decay might be a good signal for gluonic components of hadrons.

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Leonard S. Kisslinger, Zhenping Li. 1997-09-26. Sigma Signal for Hybrid Baryon Decay. https://doi.org/10.1016/s0370-2693(98)01503-2

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