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W and H+ polarizations in top decays
- Generate $e+e- \to t \bar t$ at threshold and force the tops to decay leptonically (to $e$ or $\mu$).
- Compare the charged and neutral lepton $p_T$ (or energy) distributions with those shown in the MC lectures.
- Explain why the neutrinos tend to have higher $p_T$ than the charged leptons.
- How would things change if the decay went via $t\to b H+$ with $m_{H+}=m_W$? Check by using
the 2HDM (Use the on-line calculator to get a consistent set of parameters for the 2HDM).
- As the previous exercise, but in $pp \to t\bar t$ at the LHC.
-- Main.FabioMaltoni - 06 Dec 2008
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