The electroproduction of the Delta(1232) in the chiral quark-soliton model

• Type: Article in International Scientific Journal
• Date: 2000

Authors

António Silva (Author) Other; Diana Urbano (Author) FEUP; T. Watabe (Author) Other; M. Fiolhais (Author) Other; K. Goeke (Author) Other

Journal

Title: Nuclear Physics A

Vol. 675 No. 3-4

Pages: 637-657

ISSN: 0375-9474

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 28 Citations

ISI Web of Science

Scopus - 25 Citations

Other information

Authenticus ID: P-000-Z8G

DOI: 10.1016/s0375-9474(00)00195-0

Abstract (EN): We calculate the ratios E2/M1 and C2/M1 for the electroproduction of the Delta (1232) in the region of photon virtuality 0 < -q(2) < 1 GeV2. 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 calculations are performed in flavours SU(2) and SU(3) taking rotational (1/N-c) corrections into account. The results for the ratios agree qualitatively with the available data, although the magnitude of both ratios seems to underestimate the latest experimental results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 21