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Paper   IPM / Particles / 13129
School of Particles and Accelerator
  Title:   From Tevatron's top and lepton-based asymmetries to the LHC
1.  Adrian Carmona
2.  Mikael Chala
3.  Adam Falkowski
4.  Sara Khatibi
5.  Mojtaba Mohammadi Najafabadi
6.  Gilad Perez
7.  Jose Santiago
  Status:   Published
  Journal: JHEP
  No.:  005
  Vol.:  1407
  Year:  2014
  Supported by:  IPM
We define a lepton-based asymmetry in semi-leptonic ttbar production at the LHC. We show that the ratio of this lepton-based asymmetry and the ttbar charge asymmetry, measured as a function of the lepton transverse momentum or the ttbar invariant mass is a robust observable in the Standard Model. It is stable against higher order corrections and mis-modeling effects. We show that this ratio can also be a powerful discriminant among different new physics models and between them and the Standard Model. Finally, we show that a related ratio defined at the Tevatron is also robust as a function of the ttbar invariant mass

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