Sea Contributions to Spin 1/2 Baryon Structure, Magnetic Moments, and Spin Distribution
نویسندگان
چکیده
منابع مشابه
Baryon 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 کاملar X iv : h ep - p h / 96 03 25 2 v 1 8 M ar 1 99 6 Sea contributions to spin 1 / 2 baryon structure , magnetic moments , and spin distribution
We treat the baryon as a composite system made out of a " core " of three quarks (as in the standard quark model) surrounded by a " sea " (of gluons and q ¯ q-pairs) which is specified by its total quantum numbers like flavor, spin and color. Specifically, we assume the sea to be a flavor octet with spin 0 or 1 but no color. The general wavefunction for spin 1/2 baryons with such a sea componen...
متن کاملar X iv : h ep - p h / 96 03 25 2 v 2 4 M ay 1 99 6 Sea contributions to spin 1 / 2 baryon structure , magnetic moments , and spin distribution
We treat the baryon as a composite system made out of a " core " of three quarks (as in the standard quark model) surrounded by a " sea " (of gluons and q ¯ q-pairs) which is specified by its total quantum numbers like flavor, spin and color. Specifically, we assume the sea to be a flavor octet with spin 0 or 1 but no color. The general wavefunction for spin 1/2 baryons with such a sea componen...
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 کاملThe lowest-lying spin-1/2 and spin-3/2 baryon magnetic moments in chiral perturbation theory
We review some recent progress in our understanding of the lowest-lying spin-1/2 and spin-3/2 baryon magnetic moments (MMs) in terms of Chiral Perturbation Theory (ChPT). In particular, we show that at next-to-leading-order ChPT can describe the MMs of the octet baryons quite well. We also make predictions for the decuplet MMs at the same chiral order. Among them, the MMs of the ∆ and ∆ are fou...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 1997
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x97001171