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Isoscalar-Isovector Interferences in $πN \to N e^+ e^-$ Reactions as a Probe of Baryon Resonance Dynamics

A. I. Titov·B. Kampfer
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Abstract

The isoscalar-isovector ($ρ-ω$) interferences in the exclusive reactions $π^- p \to n e^+ e^-$ and $π^+ n \to p e^+ e^-$ near the $ω$ threshold leads to a distinct difference of the dielectron invariant mass distributions depending on beam energy. The strength of this effect is determined by the coupling of resonances to the nucleon vector-meson channels and other resonance properties. Therefore, a combined analysis of these reactions can be used as a tool for determining the baryon resonance dynamics.

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A. I. Titov, B. Kampfer. 2001-08-09. Isoscalar-Isovector Interferences in $πN \to N e^+ e^-$ Reactions as a Probe of Baryon Resonance Dynamics. https://doi.org/10.1007/s100500170030

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