Octet, decuplet, and antidecuplet magnetic moments in the chiral quark soliton model reexamined
- Department of Physics, and Nuclear Physics and Radiation Technology Institute (NuRI), Pusan National University, 609-735 Busan (Korea, Republic of)
- M. Smoluchowski Institute of Physics, Jagellonian University, ul. Reymonta 4, 30-059 Cracow (Poland)
- Institut fuer Theoretische Physik II, Ruhr-Universit Bochum, D-44780 Bochum (Germany)
We reanalyze the magnetic moments of the baryon octet, decuplet, and antidecuplet within the framework of the chiral quark-soliton model, with SU(3) symmetry-breaking taken into account. We consider the contributions of the mixing of higher representations to the magnetic moment operator arising from the SU(3) symmetry-breaking. Dynamical parameters of the model are fixed by experimental data for the magnetic moments of the baryon octet and from the masses of the octet, decuplet and of {theta}{sup +}. The magnetic moment of {theta}{sup +} depends rather strongly on the pion-nucleon sigma term and reads -1.19 nm to -0.33 nm for {sigma}{sub {pi}}{sub N}=45 and 75 MeV, respectively. The recently reported mass of {xi}{sub 10-bar}{sup --}(1862) is compatible with {sigma}{sub {pi}}{sub N}=73 MeV. As a by-product the strange magnetic moment of the nucleon is obtained with a value of {mu}{sub N}{sup (s)}=+0.39 nm.
- OSTI ID:
- 20698113
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 70, Issue 11; Other Information: DOI: 10.1103/PhysRevD.70.114002; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Axial-vector transitions and strong decays of the baryon antidecuplet in the self-consistent SU(3) chiral quark-soliton model
Parity of antidecuplet baryons reexamined from chiral soliton models