Sharpening the shape analysis for higher-dimensional operator searches

Understand

When the Standard Model is interpreted as the renormalizable sector of a low-energy effective theory, the effects of new physics are encoded into a set of higher dimensional operators.

• These operators potentially deform the shapes of Standard Model differential distributions of final states observable at colliders.
• We describe a simple and systematic method to obtain optimal estimations of these deformations when using numerical tools, like Monte Carlo simulations.
• A crucial aspect of this method is minimization of the estimation uncertainty: we demonstrate how the operator coefficients have to be set in the simulations in order to get optimal results.