Subleading heavy quark effects in a nonrelativistic quark model
نویسندگان
چکیده
منابع مشابه
THE ROLE OF QUARK POLARIZATION IN HEAVY QUARK FRAGMENTATION
We calculate the exact fragmentation functions for c and b quark fragmentation taking into account the spin orientation of the initial heavy quark in the form of analytical and rather simple expressions. Our calculations show that spin orientation may have an important effect on the fragmentation spectrum. This effect is more striking in the cases of c ?D, D*; c? ? , ? , and ?B , B *.
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_ The heavy quark-self-energy in nonrelativistic lattice QCD is calculated to O(cx,) in perturbation theory. An action which includes all spin-independent relativistic corrections to order v2, where v is the typical heavy quark velocity, and all @n-dependent corrections to order v4 is used. The standard Wilson action and . _ an improved multi-plaquette action are used for the gluons. Results fo...
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The heavy quark self-energy in nonrelativistic lattice QCD is calculated to O(αs) in perturbation theory. An action which includes all spin-independent relativistic corrections to order v, where v is the typical heavy quark velocity, and all spin-dependent corrections to order v is used. The standard Wilson action and an improved multiplaquette action are used for the gluons. Results for the ma...
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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.
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1994
ISSN: 0556-2821
DOI: 10.1103/physrevd.49.373