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Paper   IPM / Particles / 8893
School of Particles and Accelerator
  Title:   Secondary particles spectra in decay of polarized top quark with anomalous tWb coupling
  Author(s):  mojtaba Mohammadi Najafabadi
  Status:   Published
  Journal: J. Phys. G
  Vol.:  34
  Year:  2007
  Pages:   39-46
  Supported by:  IPM
Analytic expression for energy and angular dependence of a secondary charged lepton in the decay of a polarized top quark with anomalous tWb couplings in the presence of all anomalous couplings are derived. The angular distribution of the b-quark is derived as well. It is presented that the charged lepton spin correlation coefficient is not very sensitive to the anomalous couplings. However, the b-quark spin correlation coefficient is sensitive to anomalous couplings and could be used as a powerful tool for searching of non-SM coupling.

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