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Meson cloud and electroproduction of the Δ(1232) resonance in a relativistic quark model approach

✍ Scribed by Y.B. Dong; K. Shimizu; Amand Faessler

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
131 KB
Volume
689
Category
Article
ISSN
0375-9474

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✦ Synopsis

Based on a relativistic potential quark model approach for the nucleon and (1232), the electroproduction amplitudes of the (1232) resonance are calculated. The important effect of the pion meson cloud is stressed. Different predictions for helicity amplitudes and electroproduction amplitudes are obtained compared to the nonrelativistic constituent quark model.

📜 SIMILAR VOLUMES

The electroproduction of the Δ(1232) in
The electroproduction of the Δ(1232) in the chiral quark–soliton model
✍ A. Silva; D. Urbano; T. Watabe; M. Fiolhais; K. Goeke 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 195 KB

We calculate the ratios E2/M1 and C2/M1 for the electroproduction of the (1232) in the region of photon virtuality 0 < -q 2 < 1 GeV 2 . The magnetic dipole amplitude M1 is also presented. The theory used is the chiral quark-soliton model, which is based on the instanton vacuum of the QCD. The calcul