== Behaviour of  %$t\bar t$% and %$t$% cross section with energy and with top mass ==


==== 1. ====
Use any MC at tree level to calculate the cross sections for %$t\bar t$% and single top (t-channel, s-channel and Wt channel, both top and antitop)
at an "LHC" with CMS energies from 1 !TeV to 20 !TeV. 

==== 2. ====
Use any MC at tree level to calculate the cross sections for %$t\bar t$% and single top (t-channel, s-channel and Wt channel, both top and antitop) 
at the "LHC" for 10 !TeV and  14 !TeV as a function of the top mass. 

==== 3. ====
Consider the case where the CKM matrix is not diagonal and the off-diagonal elements involving the $t'$ and light quarks are not small. How do the results for production change? How do the BR's change?


-- Main.FabioMaltoni - 03 Dec 2008