“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 16510
School of Particles and Accelerator
  Title:   Angular analysis of bottom-flavored hadron production in semileptonic decays of polarized top quarks
1.  Bernd A Kniehl
2.  S. Mohammad Moosavi Nejad
  Status:   To Appear
  Journal: Phys. Rev. D
  Supported by:  IPM
We study the inclusive production of bottom-flavored hadrons from semileptonic decays of polarized top quarks at next-to-leading order in QCD using fragmentation functions recently determined from a global fit to e+e data. We provide the relevant differential decay widths at parton level in analytic form. These results fill an important gap in the theoretical interpretation of recent measurements of the top-quark polarization and the tt spin correlations using dilepton final states in proton-proton collisions at the CERN Large Hadron Collider. As an illustration, we study the distributions in the scaled bottom-hadron energy of the polarized-top-quark decay widths for different W-boson helicities.

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