Dynamical study of $γ^*N \leftrightarrow Δ$ transition with $N(e,e'p)π$

Details Dynamical study of $γ^*N \leftrightarrow Δ$ transition with $N(e,e'p)π$ Dynamical study of $γ^*N \leftrightarrow Δ$ transition with $N(e,e'p)π$

2005-09-28

arxiv.org/abs/hep-ph/0509318v1

Int.J.Mod.Phys. A21 (2006) 873-876

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 postscript figures, contr. to Int. Conf. on QCD and Hadronic Physics, Beijing from Jun 16-20, 2005

Scientific paper

10.1142/S0217751X06032204

The Dubna-Mainz-Taipei (DMT) dynamical model for pion electromagnetic production, which describe well the existing data from threshold up to 1 GeV photon lab energy is presented and used to analyze recent data in the $\Delta$ region . We find that within DMT model, the bare $\Delta$ is almost spherical while the physical $\Delta$ is oblate. The deformation is almost saturated by the pion cloud effects.

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