منابع مشابه
Multi-quark Components in Baryons
A brief review on some recent progresses in our understanding of multi-quark components in baryons is presented. The multi-quark components in baryons seem to be mainly in colored quark cluster configurations rather than in " meson cloud " configurations or in the form of a sea of quark-antiquark pairs. The colored quark cluster multi-quark picture gives a natural explanation of empirical indic...
متن کاملThe quark distributions of baryons
The nucleons were considered as point-like particles when they were first isolated in the 30’s and later on they were found to have extended structure in the 50’s. The quark model suggested the nucleons as composite systems of more basic constituents of quarks and the lepton nucleon deep elastic scattering experiments in the latter 60’s confirmed the quarkparton structure of nucleons and led to...
متن کاملHeavy-quark Baryons as Skyrmions *
I discuss recent development on the description of heavy-quark (such as charmed and bottom) baryons as one or more heavy mesons " wrapped " by a skyrmion. Amazingly enough, such a description naturally arises when light-quark chiral symmetry and heavy-quark spin symmetry are incorporated in an effective Lagrangian. I interpret the resulting spectrum in terms of nonabelian induced (Berry) potent...
متن کاملHeavy Quark Fragmentation into Baryons in a Quark-diquark Model
In the framework of the nonrelativistic QCD and a quark-diquark model of baryons we have obtained the fragmentation functions for heavy quark to split into spin-1/2 and spin-3/2 double heavy baryons. It was predicted the production rates as well as the shape of the energy spectra for the cc− and bc−baryons in the region of Zo peak at LEP collider.
متن کاملHeavy Quark Distribution Functions in Heavy Baryons
Using the Bethe-Salpeter (B-S) equations for heavy baryons ΛQ, ΣQ, ΞQ and ΩQ (Q = b or c), which were established in previous work, we calculate the heavy quark distribution functions in these baryons. The numerical results indicate that these distribution functions have an obvious peak at some fraction, α0, of the baryon’s light-cone “plus” momentum component carried by the heavy quark, and th...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2010
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2010.01.194