Baryon magnetic moments
نویسندگان
چکیده
منابع مشابه
Baryon-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, ...
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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...
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– 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 کاملSU (3) breaking and baryon magnetic moments
We show that the magnetic moments of the octet baryons can be fitted to an accuracy of 1.5 % by a phenomenological Lagrangian in which SU(3) breaking corrections appear only linearly. This is in contrast to conventional chiral perturbation theory in which corrections non-analytic in SU(3) breaking dominate and tend to spoil the agreement with the data. Motivated by this observation, we propose ...
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...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1983
ISSN: 0370-2693
DOI: 10.1016/0370-2693(83)90398-2