“School of Particles”
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| Paper IPM / Particles / 14917 |
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| Abstract: | |||||
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At sufficiently large transverse momentum, the dominant production mechanism for heavy
baryons is actually the fragmentation. In this work, we first study the direct fragmentation of a heavy
quark into the unpolarized triply heavy baryons in the leading order of perturbative QCD. In a completely
different approach, we also analyze the two-stage fragmentation of a heavy quark into a scalar diquark
followed by the fragmentation of such a scalar diquark into a triply heavy baryon: quark-diquark model of
baryons. The results of this model are in acceptable agreement with those obtained through a full perturbative
regime. Relying on the quark-diquark model and considering two different scenarios we determine
the spin-dependent fragmentation functions of polarized heavy baryons in such a way that a vector or a
pseudoscalar heavy diquark is an intermediate particle between the initial heavy quark and the final state
baryon.
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