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Article overview
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Rigorous Effective Field Theory Study on Pion Form Factor | | Xiao-Jun Wang
; Mu-Lin Yan
; | | Date: |
18 May 2000 | | Subject: | hep-ph | | Abstract: | We study $e^+e^- opi^+pi^-$ cross section and phase shift of $I=l=1$ $pi-pi$ scattering below 1GeV in framework of chiral constituent quark model. The results including all order contribution of the chiral perturbation expansion and all one-loop effects of pseudoscalar mesons, but without any adjust parameters. Width of $
ho$ predicted by the model strongly depends on transition momentum-square $q^2$. We show that the mass pamameter of $
ho$-meson in its propagator is very different from its physical mass due to momentum-dependent width of $
ho$. The mass difference between $
ho^0$ and $omega$ are predicted successfully. The rigorous theoretical prediction on $e^+e^- opi^+pi^-$ cross section and the phase shift in $I=l=1$ $pi-pi$ scattering agree with data excellentlly. | | Source: | arXiv, hep-ph/0005184 | | Services: | Forum | Review | PDF | Favorites | |
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