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Extracting precise Higgs couplings by using the matrix element method.

Andersen, J.R. and Englert, C. and Spannowsky, M. (2013) 'Extracting precise Higgs couplings by using the matrix element method.', Physical review D., 87 (1). p. 15019.


After the recent discovery of a Standard Model Higgs bosonlike particle at the LHC, the question of its couplings to known and unknown matter is eminent. In this paper, we present a method that allows for an enhancement in signal over background (irreducible) of the order of 100% in pp→(h→γγ)jj for a center of mass energy of 8 and 14 TeV. This is achieved by applying the matrix element method. We discuss the implications of detector resolution effects and various approximations of the involved event simulation and reconstruction. The matrix element method provides a reliable, stable, and efficient handle to separate signal from background and the gluon and weak boson fusion components involved in this process. Employing this method, a more precise Higgs boson coupling extraction can be obtained, and our results are of immediate relevance for current searches.

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Publisher statement:Reprinted with permission from the American Physical Society: Phys. Rev. D 87, 015019 © (2013) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:No date available
Date deposited:11 July 2014
Date of first online publication:January 2013
Date first made open access:No date available

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