Study of Strong Spin-Isospin Mode Analog States at 4.5 MeV in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">B</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> in <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>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mi>e</mi><mo>,</mo><mi> </mi><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow><mrow><msup><mrow><mi>π</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow><mo>)</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">B</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

K. Min; E. J. Winhold; K. Shoda; H. Tsubota; H. Ohashi; M. Yamazaki

doi:10.1103/PhysRevLett.44.1384

Study of Strong Spin-Isospin Mode Analog States at 4.5 MeV in ${}^{12}B$ in ${}^{12}C (e, e^{'} π^{+}) {}^{12}B$

K. Min, E. J. Winhold, K. Shoda, H. Tsubota, H. Ohashi, and M. Yamazaki

Phys. Rev. Lett. 44, 1384 – Published 26 May 1980

Abstract

Strong spin-isospin mode, $T = 1$ , $T_{z} = 1$ analog states at 4.5 MeV in ${}^{12}B$ were studied by the reaction ${}^{12}C (e, e^{'} π^{+}) {}^{12}B$ at the electron energy $E_{e} = 200$ MeV. The photoproduction cross sections at seven angles ranging from 30° to 150° were obtained with use of virtualphoton theory and an experimentally determined real-to-virtual photon ratio. The results are compared with theoretical calculations and also with the available data on inelastic scattering from the 19.5-MeV $T = 1$ , $T_{z} = 0$ analog complex in ${}^{12}C$ .