منابع مشابه
Meson-photon Transition Form Factors in the Charmonium Energy Range
The study of electron-positron collisions at center-of-mass energies corresponding to charmonium production has reached new levels of sensitivity thanks to experiments by the BES and CLEO Collaborations. Final states γP , where P is a pseudoscalar meson such as π, η, and η can arise either from charmonium decays or in the continuum through a virtual photon: ee → γ → γP . Estimates of this latte...
متن کاملVector meson electromagnetic form factors
Germany bSchool of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK cInstitut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany dSchool of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, UK eJohn von Neumann-Institut für Computing NIC / DESY, 15738 Zeuthen, Germany f Theoretical Physics Division, Department of Mathematical S...
متن کاملExtrapolations of Lattice Meson Form Factors
Abstract We use chiral perturbation theory to study the extrapolations necessary to make physical predictions from lattice QCD data for the electromagnetic form factors of pseudoscalar mesons. We focus on the quark mass, momentum, lattice spacing, and volume dependence and apply our results to simulations employing mixed actions of Ginsparg-Wilson valence quarks and staggered sea quarks. To det...
متن کاملElectromagnetic Form Factors of Meson Transitions
The Dyson-Schwinger equation (DSE) approach [1] to non-perturbative QCD modeling of hadrons and their interactions [2] combines truncated QCD equations of motion for propagators and vertices with infrared phenomenology fitted to a few key low-energy observables. Parameter-free predictions for other hadron properties and observables are then used to develop and test our understanding of hadron p...
متن کاملDyson–Schwinger calculations of meson form factors
The ladder-rainbow truncation of the set of Dyson–Schwinger equations is used to study the pion and kaon electromagnetic form factors and the γπγ transition form factor in impulse approximation. With model parameters previously fixed by the pseudoscalar meson masses and decay constants, the obtained form factors are in good agreement with the data. 1 The Dyson–Schwinger Equations Our aim is to ...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1985
ISSN: 0550-3213
DOI: 10.1016/0550-3213(85)90493-6