Contribution of the second kind of meson exchange current to pion-nucleus double-charge-exchange reactions O18(π+,π)18Ne(g.s) and C14(π+,π)14Og.s.

Yu Zi-qiang, Cai Chong-hai, Ma Wei-hsing, and Zhao Shu-ping
Phys. Rev. C 38, 272 – Published 1 July 1988
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Abstract

Based on the Lagrangian of Olsson and Turner, contributions of the second kind of meson exchange current to pion-nucleus double-charge-exchange reactions O18(π+,π)18Ne(g.s)) and C14(π+,π)14Og.s. have been evaluated. The calculated results show that the second kind of meson exchange current makes the forward theoretical cross section closer to the experimental data but the long-standing puzzling problem of the location of the minimum of the angular distribution at the energy of 164 MeV has not been solved.

  • Received 9 November 1987

DOI:https://doi.org/10.1103/PhysRevC.38.272

©1988 American Physical Society

Authors & Affiliations

Yu Zi-qiang and Cai Chong-hai

  • Department of Physics, Nankai University, Tianjin, China

Ma Wei-hsing

  • Center of Theoretical Physics, China Center of Advanced Science cademia Technology (World Laboratory) and Institute of High Energy Physics, Academia Sinica, Beijing, The People’s Republic of China

Zhao Shu-ping

  • Department of Modern Physics, China University of Science and Technology, Hefei, China

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Vol. 38, Iss. 1 — July 1988

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