Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-19
JHEP 1012:068,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
41 pages, 21 figures
Scientific paper
10.1007/JHEP12(2010)068
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.
Artoisenet Pierre
Lemaitre Vincent
Maltoni Fabio
Mattelaer Olivier
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