Pionic charge exchange on the proton from 40 to 250 MeV

Abstract

The total cross sections for pionic charge exchange on hydrogen were measured using a transmission technique on thin CH2 and C targets. Data were taken for pi- lab energies from 39 to 247 MeV with total errors of typically 2% over the Delta-resonance and up to 10% at the lowest energies. Deviations from the predictions of the SAID phase shift analysis in the 60 to 80 MeV region are interpreted as evidence for isospin-symmetry breaking in the s-wave amplitudes. The charge dependence of the Delta-resonance properties appears to be smaller than previously reported.

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Dispersion Relation Constrained Partial Wave Analysis of piN Elastic and piN\to\etaN Scattering Data: The Baryon Spectrum
• Complete analysis of pion-nucleon scattering in chiral perturbation theory to third order
• Towards an understanding of isospin violation in pion-nucleon scattering
• pi+- p differential cross sections at low energies
• Low Energy Analyzing Powers in Pion-Proton Elastic Scattering

Cited by in corpus (10)

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• Differential cross sections of the charge-exchange reaction pi- p --> pi0 n in the momentum range from 103 to 178 MeV/c
• Axion-photon conversion in transient compact stars: Systematics, constraints, and opportunities
• Analysis of the low-energy ${\pi }^{-}p$ charge-exchange data
• Quark model study of the $\pi N\to \pi N$ reactions up to the $N(1440)$ resonance region
• Proposals for the test of the isospin invariance in the pion-nucleon interaction at low energy