Form Factor Fit for e+e－→π+π－π+π－

WENG Yao; HU Hai-Ming; WANG Jun

Chinese Physics C> 2007, Vol. 31> Issue(5) : 419-422

Form Factor Fit for e⁺e^－→π⁺π^－π⁺π^－

Institute of High Energy Physics, CAS, Beijing 100049, China2 Department of Physics, Kunming Teacher's College, Kunming 650034, China

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Abstract：
Based on the experimental data of the cross section e⁺e^－→π⁺π^－π⁺π^－ measured by the BABAR collaboration, we apply the theoretical cross section deduced from the extended VMD (Vector Meson Dominance) model to fit these experimental results. It is the first time that the isovector form factor and the relevant parameters are obtained through one decay mode.

References

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. Achasov N N, Kozhevnikov A A. Phys. Rev., 1997, D55:26632. Achasov N N, Kozhevnikov A A. hep-ph/99043263. BABAR Collaboration(Aubert B et al). Phys. Rev., 2005,D71: 0520014. CERN Program Library Entry D5065. YAO Y M et al. J. Phys., 2006, G33: 16. Dolinsky S I et al. Phys. Rep., 1991, 202: 997. CHENG Hai-Yang et al. Phys. Rev., 2005, D71: 014030

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WENG Yao, HU Hai-Ming and WANG Jun. Form Factor Fit for e⁺e^－→π⁺π^－π⁺π^－[J]. Chinese Physics C, 2007, 31(5): 419-422.

WENG Yao, HU Hai-Ming and WANG Jun. Form Factor Fit for e⁺e^－→π⁺π^－π⁺π^－[J]. Chinese Physics C, 2007, 31(5): 419-422. shu

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Received: 2006-08-08
Revised: 2006-09-15

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沈阳化工大学材料科学与工程学院沈阳 110142

Form Factor Fit for e⁺e^－→π⁺π^－π⁺π^－

Corresponding author: WENG Yao,

Institute of High Energy Physics, CAS, Beijing 100049, China2 Department of Physics, Kunming Teacher's College, Kunming 650034, China

Received Date: 2006-08-08
Accepted Date: 2006-09-15
Available Online: 2007-05-05

Abstract: Based on the experimental data of the cross section e⁺e^－→π⁺π^－π⁺π^－ measured by the BABAR collaboration, we apply the theoretical cross section deduced from the extended VMD (Vector Meson Dominance) model to fit these experimental results. It is the first time that the isovector form factor and the relevant parameters are obtained through one decay mode.