Phenomenological quark model for baryon magnetic moments and beta decay ratios(GA/GV)
نویسندگان
چکیده
منابع مشابه
Baryon Magnetic Moments in a Relativistic Quark Model
Magnetic moments of baryons in the ground-state octet and decuplet are calculated in a light-front framework. We investigate the effects of quark mass variation both in the current operator and in the wavefunctions. A simple fit uses single oscillator wavefunctions for the baryons and allows the three flavors of quark to have nonzero anomalous magnetic moments. We find a good fit to the data wi...
متن کاملBaryon Magnetic Moments and Quark Orbital Motion in the Chiral Quark model
Using the unified scheme for describing both quark spin and orbital angular momenta in the chiral quark model developed in the previous work, the magnetic moments of octet and decuplet baryons are calculated. The numerical result shows that the overall agreement with data is improved by including the orbital contributions. 13.40.Em, 13.88.+e, 12.39.Fe, 14.20.Dh Typeset using REVTEX
متن کاملBaryon Spin and Magnetic Moments in Relativistic Chiral Quark Models
The spin and flavor fractions of constituent quarks in the baryon octet are obtained from their lowest order chiral fluctuations involving Goldstone bosons. SU(3) breaking suggested by the mass difference between the strange and up, down quarks is included, as are relativistic effects by means of a light-cone quark model for the proton. Magnetic moments are analyzed and compared with the Karl-S...
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 کاملBaryon Magnetic Moments and Proton Spin : A Model with Collective Quark Rotation
We analyse the baryon magnetic moments in a model that relates them to the parton spins ∆u, ∆d, ∆s, and includes a contribution from orbital angular momentum. The specific assumption is the existence of a 3-quark correlation (such as a flux string) that rotates with angular momentum 〈Lz〉 around the proton spin axis. A fit to the baryon magnetic moments, constrained by the measured values of the...
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: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.66.033010