Joint description of the e{sup +}e{sup -} annihilation into both four-pion channels
- Institute of Physics, Silesian University in Opava, Bezrucovo namesti 13, 746 01 Opava (Czech Republic)
The e{sup +}e{sup -}{yields}{pi}{sup +}{pi}{sup -}{pi}{sup 0}{pi}{sup 0} reaction cross section as a function of the incident energy is calculated using a model that is an extension of our recently published model of the e{sup +}e{sup -} annihilation into four charged pions. The latter considered the intermediate states with the {pi}, {rho}, and a{sub 1} mesons and fixed the mixing angle of the a{sub 1}{rho}{pi} Lagrangian and other parameters by fitting the cross section data. Here we supplement the original intermediate states with those containing {omega}(782) and h{sub 1}(1170), but keep unchanged the values of those parameters that enter both charged and mixed channel calculations. The inclusion of {omega} is vital for obtaining a good fit to the cross section data, while the intermediate states with h{sub 1} further improve it. Finally, we merge our models of the e{sup +}e{sup -}{yields}{pi}{sup +}{pi}{sup -}{pi}{sup 0}{pi}{sup 0} and e{sup +}e{sup -}{yields}{pi}{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -} reactions and obtain a simultaneous good fit.
- OSTI ID:
- 21250288
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 1; Other Information: DOI: 10.1103/PhysRevD.78.017501; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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