منابع مشابه
Heavy 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 کاملBaryons in and beyond the quark-diquark model
We examine the nucleon’s electromagnetic form factors in a Poincaré-covariant Faddeev framework. The threequark core contributions to the form factors are obtained by employing a quark-diquark approximation. We implement the selfconsistent solution for the quark-photon vertex from its inhomogeneous Bethe-Salpeter equation. We find that the resulting transverse parts which add to the Ball-Chiu v...
متن کاملBaryons in a Covariant and Confining Diquark–Quark Model
In a covariant model where constituent quarks and diquarks interact through quark exchange, the Bethe-Salpeter equation in ladder approximation for octet and decuplet baryons is solved. Quark and diquark confinement is thereby effectively parametrised by choosing appropriately modified propagators. Numerical results for the baryon masses are presented. In a second step electromagnetic, weak and...
متن کاملA Diquark Model for Baryons Containing One Heavy Quark
We present a phenomenological ansatz for coupling a heavy quark with two light quarks to form a heavy baryon. The heavy quark is treated in the heavy mass limit, and the light quark dynamics is approximated by propagating scalar and axial vector`diquarks'. The resulting eeective lagrangian, which incorporates heavy quark and chiral symmetry, describes interactions of heavy baryons with Goldston...
متن کاملHeavy baryons in the quark–diquark picture
We describe heavy baryons as bound states of a quark and a diquark. For this purpose we derive the Faddeev equation for baryons containing a single heavy quark from a Nambu– Jona-Lasinio type of model which is appropriately extended to include also heavy quarks. The latter are treated in the heavy mass limit. The heavy baryon Faddeev equation is then solved using a static approximation for the ...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2005
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.72.022201