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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sharpening the shape analysis for higher-dimensional operator searches

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Fichet, Sylvain ; Tonero, Alberto ; Teles, Patricia Rebello
Total Authors: 3
Document type: Journal article
Source: Physical Review D; v. 96, n. 3 AUG 3 2017.
Web of Science Citations: 4

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. The uncertainty on the interference term turns out to be the most difficult to control and grows very quickly when the interference is suppressed. We exemplify our method by computing the deformations induced by the O-3W operator in W+W- production at the LHC, and by deriving a bound on O-3W using 8 TeV CMS data. (AU)

FAPESP's process: 14/21477-2 - Particle physics at the TeV scale and beyond: models and interpretations
Grantee:Sylvain Pierre Joseph Fichet
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants