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Automation of the matrix element reweighting method. (English) Zbl 1294.81311
Summary: Matrix element reweighting is a powerful experimental technique widely employed to maximize the amount of information that can be extracted from a collider data set. We present a procedure that allows to automatically evaluate the weights for any process of interest in the standard model and beyond. Given the initial, intermediate and final state particles, and the transfer functions for the final physics objects, such as leptons, jets, missing transverse energy, our algorithm creates a phase-space mapping designed to efficiently perform the integration of the squared matrix element and the transfer functions. The implementation builds up on MadGraph, it is completely automatized and publicly available. A few sample applications are presented that show the capabilities of the code and illustrate the possibilities for new studies that such an approach opens up.

MSC:
81V22 Unified quantum theories
81T60 Supersymmetric field theories in quantum mechanics
81T80 Simulation and numerical modelling (quantum field theory) (MSC2010)
81-08 Computational methods for problems pertaining to quantum theory
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