Extracting precise Higgs couplings by using the matrix element method

Andersen, J.R.; Englert, C.; Spannowsky, M.

doi:10.1103/physrevd.87.015019

Extracting precise Higgs couplings by using the matrix element method

Andersen, J.R.; Englert, C.; Spannowsky, M.

Authors

Professor Jeppe Andersen jeppe.andersen@durham.ac.uk
Professor

C. Englert

Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director

Abstract

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.

Citation

Andersen, J., Englert, C., & Spannowsky, M. (2013). Extracting precise Higgs couplings by using the matrix element method. Physical Review D, 87(1), Article 015019. https://doi.org/10.1103/physrevd.87.015019

Journal Article Type	Article
Publication Date	Jan 1, 2013
Deposit Date	Mar 12, 2013
Publicly Available Date	Jul 11, 2014
Journal	Physical Review D
Print ISSN	1550-7998
Electronic ISSN	1550-2368
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	87
Issue	1
Article Number	015019
DOI	https://doi.org/10.1103/physrevd.87.015019

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