Eur. Phys. J. A (2004) 22: 481-487
https://doi.org/10.1140/epja/i2003-10240-x

Strange and singlet form factors of the nucleon: Predictions for G0, A4, and HAPPEX II experiments

¹ Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780, Bochum, Germany
² Departamento de Física and Centro de Física Computacional, Universidade de Coimbra, P-3000, Coimbra, Portugal
³ Pusan National University, 609-735, Busan, Republic of Korea

^* e-mail: hchkim@pusan.ac.kr

Received: 27 August 2003
Accepted: 8 July 2004
Published online: 11 November 2004

Abstract

We investigate the strange and flavor-singlet electric and magnetic form factors of the nucleon within the framework of the SU(3) chiral quark-soliton model. Isospin symmetry is assumed and the symmetry-conserving SU(3) quantization is employed, rotational and strange-quark mass corrections being included. For the experiments G0, A4, and HAPPEX II we predict the quantities G ⁰ _E + βG ⁰ _M and G ^s _E + βG ^s _M. The dependence of the results on the parameters of the model and the treatment of the Yukawa asymptotic behavior of the soliton are investigated.