Baryon magnetic moments in the background field method
نویسندگان
چکیده
منابع مشابه
Baryon magnetic moments in the background field method
We present a calculation of the magnetic moments for the baryon octet and decuplet using the background-field method and standard Wilson gauge and fermion actions in the quenched approximation of lattice QCD. Progressively smaller static magnetic fields are introduced on a 244 lattice at beta=6.0 and the pion mass is probed down to about 500 MeV. Magnetic moments are extracted from the linear r...
متن کاملMean field baryon magnetic moments and sumrules
– New developments have spurred interest in magnetic moments (μ-s) of baryons. The measurement of some of the decuplet μ-s and the findings of new sumrules from various methods are partly responsible for this renewed interest. Our model, inspired by large colour approximation, is a relativistic self consistent mean field description with a modified Richardson potential and is used to describe t...
متن کاملBaryon-decuplet magnetic moments
We investigate the generalized Coleman-Glashow sum rules in the magnetic moments of the baryon decuplet in the chiral bag model. Due to the spin symmetries held both for the effective and naive NRQMs in the SU(3) flavor symmetric limit, the chiral bag model can be considered as an effective NRQM with meson cloud as in the baryon octet. In thc multiquark structure with U-spin symmetry breaking, ...
متن کاملChiral Structure in Baryon Magnetic Moments
The issue of chiral extrapolation has been highlighted as an important problem facing modern lattice QCD simulations [1,2], if one is to make any comparison with experiment. Extrapolations in quark mass are nontrivial because of nonanalytic contributions which arise as a consequence of dynamically broken chiral symmetry in the QCD vacuum [3]. At typical lattice quark masses there is little evid...
متن کاملBaryon magnetic moments in chiral perturbation theory
We consider the chiral expansion of the octet baryon magnetic moments in heavy baryon chiral perturbation theory including all terms which are of order q4. These terms are formally of quadratic order in the quark masses. We show that despite the large non– analytic quark mass corrections to the Coleman–Glashow relations at order q3, including all analytic and non–analytic corrections at order q...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2005
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2005.08.106