2010

Non-resonant New Physics in Top Pair Production at Hadron Colliders

Degrande, Céline, Gérard, Jean-Marc, Grojean, Christophe et al.

Understand

We use top quark pair production as a probe of top-philic non-resonant new physics.

Following a low energy effective field theory approach, we calculate several key observables in top quark pair production at hadron colliders (e.g., total cross section, ttbar invariant mass distribution, forward-backward asymmetry, spin correlations) including the interference of the Standard Model with dimension-six operators.
We determine the LHC reach in probing new physics after having taken into account the Tevatron constraints.
In particular, we show that the gluon fusion process gg -> ttbar which remains largely unconstrained at the Tevatron is affected by only one top-philic dimension-six operator, the chromo-magnetic moment of the top quark.

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