Electric properties of the baryon anti-decuplet in the SU(3) chiral quark-soliton model

• Type: Article in International Scientific Journal
• Date: 2006

Authors

T. Ledwig (Author) Other; H.-C. Kim (Author) Other; A. Silva (Author) FEUP; K. Goeke (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Initial page: 054005

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Science

Scopus

Scientific classification

FOS: Natural sciences > Physical sciences

CORDIS: Physical sciences > Physics

Other information

Abstract (EN): We investigate the electric form factors and charge radii of the pentaquark baryons within the framework of the chiral quark-soliton model. We consider the rotational 1/Nc and linear ms corrections, assuming isospin symmetry and employing the symmetry-conserving quantization. The flavor-decomposed charge densities of the Θ+ are presented. The electric form factors and charge radii of the charged pentaquark baryons turn out to be very similar to those of the corresponding octet baryons. The charge radii of the neutral pentaquark baryons are obtained to be very tiny and positive. The strange electric form factor of the pentaquark proton is shown to be larger than the corresponding one of the proton by around 20%. We also present the charge radii of the baryon decuplet for comparison.

Language: Portuguese

Type (Professor's evaluation): Scientific