<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>13</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><mo>)</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">O</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>13</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> near the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>Δ</mi></mrow><mrow><mn>33</mn></mrow></msub></mrow></math></span> resonance

Peter A. Seidl; Mark D. Brown; Rex R. Kiziah; C. Fred Moore; Helmut Baer; C. L. Morris; G. R. Burleson; W. B. Cottingame; Steven J. Greene; L. C. Bland; R. Gilman; H. T. Fortune

doi:10.1103/PhysRevC.30.1076

${}^{13}C (π^{+}, π^{-}) {}^{13}O$ near the $Δ_{33}$ resonance

Peter A. Seidl, Mark D. Brown, Rex R. Kiziah, C. Fred Moore, Helmut Baer, C. L. Morris, G. R. Burleson, W. B. Cottingame, Steven J. Greene, L. C. Bland, R. Gilman, and H. T. Fortune

Phys. Rev. C 30, 1076 – Published 1 September 1984

Abstract

We present differential cross sections for ${}^{13}C (π^{+}, π^{-}) {}^{13}O (g . s .)$ and ${}^{13}C (π^{+}, π^{-}) {}^{13}O (4.21 MeV)$ near the $Δ_{33}$ resonance. The former exhibits a slowly varying angular distribution between 0° and 50°, but the excited state angular distribution shows diffractive features observed formerly only in $J^{π} = 0^{+} to 0^{+}$ non-analog double-charge-exchange reactions.