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- Terschlusen, Carla, et al.
(author)
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Low-lying pseudoscalar and vector mesons and their dynamics : How to describe radiative reactions with an odd number of pions
- 2014
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In: INPC 2013 - International Nuclear Physics Conference, Vol. 2. - : EDP Sciences. - 9782759811762 ; , s. 06023-
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Conference paper (peer-reviewed)abstract
- In chiral perturbation theory, the leading-order contribution to reactions with pions in the sector of odd intrinsic parity is defined by the Wess-Zumino-Witten structure. This structure is supplemented by a simple vector-meson Lagrangian where the vector mesons are described by antisymmetric tensor fields. With the rho-omega-pion coupling as the only parameter in the sector of odd intrinsic parity, i.e. without additional contact terms, one can achieve a proper description of the single- and double-virtual pion transition form factor and the three-pion production in electron-positron collisions.
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