Polarization effects in the reaction e{sup +}+e{sup -}{yields}{rho}{sup +}+{rho}{sup -} and determination of the {rho}-meson form factors in the time-like region
Journal Article
·
· Physical Review. C, Nuclear Physics
- DAPNIA/SPhN, CEA/Saclay, F-91191 Gif-sur-Yvette Cedex (France)
The electron positron annihilation reaction into four-pion production has been studied, through the channel e{sup +}+e{sup -}{yields}{rho}+{rho}. The differential (and total) cross sections and various polarization observables for this reaction have been calculated in terms of the electromagnetic form factors of the corresponding {gamma}*{rho}{rho} current. The elements of the spin-density matrix of the {rho} meson were also calculated. Numerical estimations have been done, with the help of phenomenological form factors obtained in the spacelike region of the momentum transfer squared and analytically extended to the timelike region.
- OSTI ID:
- 21003497
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 75, Issue 6; Other Information: DOI: 10.1103/PhysRevC.75.065202; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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