1202.0367 (P. Ko)

Effective field theory for top physics    [PDF]

P. Ko

We study the top forward-backward asymmetry (FBA $\equiv A_{\rm FB}$)
reported by CDF and D0 Collaborations in the effective lagrangian approach.
Using dimension-6 effective largrangians for $q \bar{q} \rightarrow t \bar{t}$,
we study the $t\bar{t}$ production cross section and the $A_{\rm FB}$, and a
few observables: the FB spin-spin correlation that is strongly correlated with
the $A_{\rm FB}$, and longitudinal top polarization as a new probe of chiral
structures for possible new physics scenarios.

View original: http://arxiv.org/abs/1202.0367