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arxiv: hep-ph/9807326 · v1 · submitted 1998-07-10 · ✦ hep-ph

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Another look at ππ scattering in the scalar channel

Keiji Igi , Ken-ichi Hikasa
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classification ✦ hep-ph
keywords channelscalarscatteringamplitudesanalyticityanotherapproximatebelow
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We set up a general framework to describe $\pi\pi$ scattering below 1 GeV based on chiral low-energy expansion with possible spin-0 and 1 resonances. Partial wave amplitudes are obtained with the $N/D$ method, which satisfy unitarity, analyticity and approximate crossing symmetry. Comparison with the phase shift data in the J=0 channel favors a scalar resonance near the $\rho$ mass.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. High-Energy Pion Scattering in Holographic QCD: A Comparison with Experimental Data

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    Holographic hard-wall model produces angular distributions for high-energy pion scattering that show qualitative agreement with experimental extractions.