Pion-pion scattering near threshold in the Resonance-Spectrum Expansion

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dc.creatorvan Beveren, Eef
dc.creatorRupp, George
dc.date2007-02-12
dc.date.accessioned2026-07-07T07:46:13Z
dc.date.available2026-07-07T07:46:13Z
dc.descriptionWe study the properties of the Resonance-Spectrum Expansion near threshold in I=0 S-wave pion-pion scattering. The real part of the amplitude, when extrapolated from above threshold to below threshold, is found to vanish at a positive non-zero value of the total invariant mass of the system, in agreement with predictions from perturbative chiral models. In our exact analytic expression, the total amplitude vanishes identically at zero invariant mass.
dc.description7 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0702117
dc.identifierhttp://arxiv.org/abs/hep-ph/0702117
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/123759
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePion-pion scattering near threshold in the Resonance-Spectrum Expansion
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