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Paper   IPM / Particles And Accelerator / 16181
School of Particles and Accelerator
  Title:   Λ +c fragmentation functions from pQCD approach and the Suzuki model
1.  Mahdi Delpasand
2.  Mohammad Moosavi Nejad
3.  Maryam Soleymaninia
  Status:   Published
  Journal: Phys. Rev. D
  No.:  114022
  Vol.:  101
  Year:  2020
  Supported by:  IPM
Through data analysis, we present new sets of nonperturbative fragmentation functions (FFs) for Λ+c baryon both at leading and next-to-leading order and, for the first time, at next-to-next-to-leading order in the minimal subtraction factorization scheme with five massless quarks. The FFs are determined by fitting all available data of inclusive single Λ+c
c baryon production in e+e�?? annihilation taken by the OPAL Collaboration at CERN LEP1 and Belle Collaboration at KEKB. We also estimate the uncertainties in the �?+c
FFs as well as in the corresponding observables. In a completely different approach based on the Suzuki model, we will theoretically calculate the �?+c
FF from charm quark and present our results at leading order perturbative QCD framework. A comparison confirms a good consistency between both approaches. We will also apply the �?+c FFs to make theoretical predictions for the energy distribution of �?+c produced through the top quark decay, to be measured at the CERN LHC.

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