Contribution of the $\sigma$ meson exchange to pionic double charge exchange reaction

Xiao-fu Lü; B.S. Zou; Hui-ming Ding; Yu-xin Liu; En-guang Zhao

doi:doi:10.1007/s100500050192

EPJ

Contribution of the $\sigma$ meson exchange to pionic double charge exchange reaction

Xiao-fu Lü^1,5 - B.S. Zou² - Hui-ming Ding^3,5 - Yu-xin Liu^4,5 - En-guang Zhao⁵

¹ Department of Physics, Sichuan University, Chengdu 610064, China
² Queen Mary and Westfield College, London E1, 4NS, UK
³ Department of Physics, Jilin University, Changchun 130023, China
⁴ Department of Physics, Peking University, Beijing 100871, China
⁵ Institute of Theoretical Physics, Academia Sinica, P. O. Box 2735, Beijing 100080, China

Received: 5 August 1998 Communicated by V.V. Anisovich

Abstract
The contribution of the $\sigma$ meson exchange to the pionic double charge exchange (DCX) reaction is investigated. A concrete calculation on the forward excitation function of the low energy DCX reaction $^{14}\mbox{C}(\pi ^{+}, \, \pi ^{-} ) ^{14} \mbox{O}$ has been performed. It shows that the contribution of the $\sigma$ meson exchange can reproduce well the resonance like excitation function of low energy DCX reaction.

PACS
25.80.Gn Pion charge-exchange reactions - 13.75.Gx Pion-baryon interactions