Interference Effects in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">O</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>16</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mrow><msup><mrow><mi>π</mi></mrow><mrow><mo>±</mo></mrow></msup></mrow><mo>,</mo><mrow><msup><mrow><mi>π</mi></mrow><mrow><mo>±</mo></mrow></msup></mrow><mi>p</mi><mo>)</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">N</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>15</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Δ</mi></math></span>-Nucleus Interactions

G. S. Kyle; P. -A. Amaudruz; Th. S. Bauer; J. J. Domingo; C. H. Q. Ingram; J. Jansen; D. Renker; J. Zichy; R. Stamminger; F. Vogler

doi:10.1103/PhysRevLett.52.974

Interference Effects in ${}^{16}O (π^{\pm}, π^{\pm} p) {}^{15}N$ and $Δ$ -Nucleus Interactions

G. S. Kyle, P. -A. Amaudruz, Th. S. Bauer, J. J. Domingo, C. H. Q. Ingram, J. Jansen, D. Renker, J. Zichy, R. Stamminger, and F. Vogler

Phys. Rev. Lett. 52, 974 – Published 19 March 1984

Abstract

First results for ${}^{16}O (π^{\pm}, π^{\pm} p) {}^{15}N_{g . s .}$ at 240 MeV for $θ_{π} = 35 °, 60 °, and 130 °$ in quasifree kinematics are reported. $\frac{π^{+}}{π^{-}}$ cross-section ratios much greater than for scattering by free protons are interpreted as due to a $Δ - N$ interaction interfering with the quasifree process.