Pion single charge exchange on <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Li</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>7</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> at low energies

F. Irom; H. W. Baer; J. D. Bowman; M. D. Cooper; E. Piasetzky; U. Sennhauser; H. J. Ziock; M. J. Leitch; A. Erell; M. A. Moinester; J. R. Comfort

doi:10.1103/PhysRevC.31.1464

Pion single charge exchange on ${}^{7}{Li}$ at low energies

F. Irom, H. W. Baer, J. D. Bowman, M. D. Cooper, E. Piasetzky, U. Sennhauser, H. J. Ziock, M. J. Leitch, A. Erell, M. A. Moinester, and J. R. Comfort

Phys. Rev. C 31, 1464 – Published 1 April 1985

Abstract

Forward-angle differential cross sections for the isobaric-analog-state transition, ${}^{7}$ Li( $π^{+}$ , $π^{0}$ $)^{7}$ Be, were measured at 33.5, 41.1, 48.7, and 58.8 MeV. A minimum in the excitation function of ${}^{7}{Li}$ at 42.3±1 MeV reflects the analogous minimum in the free πN cross section, which, according to current phase-shift analyses, is between 45 and 50 MeV. The data are compared with optical-model calculations.