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

Barr, Alan J. and Dolan, Matthew J. and Englert, Christoph and Spannowsky, Michael (2014) 'Di-Higgs final states augMT2ed – Selecting hh events at the high luminosity LHC.', Physics letters B., 728 . pp. 308-313.


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.

Item Type:Article
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Publisher statement:© 2013 The Authors. Published by Elsevier B.V. Open access under CC BY license.
Date accepted:02 December 2013
Date deposited:20 April 2016
Date of first online publication:06 December 2013
Date first made open access:No date available

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