Pion and Kaon Electromagnetic Form Factors in a $SU_{L}(3)\otimes SU_{R}(3)$ Effective Lagrangian

Yun Chang Shin; Bong Soo Han; Myung Ki Cheoun; K. S Kim; Il-Tong Cheon

doi:10.1007/s100500070044

paper

Pion and Kaon Electromagnetic Form Factors in a $S U_{L} (3) \otimes S U_{R} (3)$ Effective Lagrangian

arXiv:nucl-th/9912015 · doi:10.1007/s100500070044

Abstract

A SU(2) effective lagrangian is extended to a $S U_{L} (3) \otimes S U_{R} (3)$ by including the vector and axial vector meson. With this effective lagrangian, electromagnetic form factors of charged pion and kaon are calculated. The pseudoscalar meson loops are taken into account. Good agreement with experimental data is obtained for those form factors. Decay widths of $ρ \to π π$ and $ϕ \to K^{+} K^{-}$ are also calculated and shown to agree with experimental data very well.

19pages, 7figures

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Pion and Kaon Electromagnetic Form Factors in a $S U_{L} (3) \otimes S U_{R} (3)$ Effective Lagrangian