Di-Higgs final states augMT2ed – Selecting hh events at the high luminosity LHC

Barr, Alan J.; Dolan, Matthew J.; Englert, Christoph; Spannowsky, Michael

doi:10.1016/j.physletb.2013.12.011

Di-Higgs final states augMT2ed – Selecting hh events at the high luminosity LHC

Barr, Alan J.; Dolan, Matthew J.; Englert, Christoph; Spannowsky, Michael

Authors

Alan J. Barr

Matthew J. Dolan

Christoph Englert

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

Abstract

Higgs boson self-interactions can be investigated via di-Higgs (pp→hh+X) production at the LHC. With a small O(30) fb Standard Model production cross section, and a large View the MathML source background, this measurement has been considered challenging, even at a luminosity-upgraded LHC. We demonstrate that by using simple kinematic bounding variables, of the sort already employed in existing LHC searches, the dominant View the MathML source background can be largely eliminated. Simulations of the signal and the dominant background demonstrate the prospect for measurement of the di-Higgs production cross section at the 30% level using 3 ab−1 of integrated luminosity at a high luminosity LHC. This corresponds to a Higgs self-coupling determination with 60% accuracy in the View the MathML source mode, with potential for further improvements from e.g. subjet technologies and from additional di-Higgs decay channels.

Citation

Barr, A. J., Dolan, M. J., Englert, C., & Spannowsky, M. (2014). Di-Higgs final states augMT2ed – Selecting hh events at the high luminosity LHC. Physics Letters B, 728, 308-313. https://doi.org/10.1016/j.physletb.2013.12.011

Journal Article Type	Article
Acceptance Date	Dec 2, 2013
Online Publication Date	Dec 6, 2013
Publication Date	Jan 20, 2014
Deposit Date	Dec 12, 2014
Publicly Available Date	Apr 20, 2016
Journal	Physics Letters B
Print ISSN	0370-2693
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	728
Pages	308-313
DOI	https://doi.org/10.1016/j.physletb.2013.12.011