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Pion Generalized Dipole Polarizabilities by Virtual Compton Scattering $pi e o pi egamma$ | | C. Unkmeir
; A. Ocherashvili
; T. Fuchs
; M. A. Moinester
; S. Scherer
; | | Date: |
3 Jul 2001 | | Journal: | Phys.Rev. C65 (2002) 015206 | | Subject: | hep-ph hep-ex nucl-ex nucl-th | | Affiliation: | Institut f. Kernphysik, Mainz, Germany), A. Ocherashvili (Tel Aviv University, Tel Aviv, Israel), T. Fuchs (Institut f. Kernphysik, Mainz, Germany), M. A. Moinester (Tel Aviv University, Tel Aviv, Israel), S. Scherer (Institut f. Kernphysik, Mainz, Ger | | Abstract: | We present a calculation of the cross section and the event generator of the reaction $pi e o pi e gamma$. This reaction is sensitive to the pion generalized dipole polarizabilities, namely, the longitudinal electric $alpha_L(q^2)$, the transverse electric $alpha_T(q^2)$, and the magnetic $eta(q^2)$ which, in the real-photon limit, reduce to the ordinary electric and magnetic polarizabilities $ar{alpha}$ and $ar{eta}$, respectively. The calculation of the cross section is done in the framework of chiral perturbation theory at ${cal O}(p^4)$. A pion VCS event generator has been written which is ready for implementation in GEANT simulation codes or for independent use. | | Source: | arXiv, hep-ph/0107020 | | Services: | Forum | Review | PDF | Favorites | |
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