“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 14917
School of Particles and Accelerator
  Title:   Polarized heavy baryon production in quark-diquark model considering two different scenarios
1.  Seyed Mohammad Moosavi Nejad
2.  M Delpasand
  Status:   Published
  Journal: Eur. Phys. J. A
  No.:  174
  Vol.:  53
  Year:  2017
  Supported by:  IPM
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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