Di-Higgs final states augMT2ed: selecting hh events at the high luminosity LHC

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

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Englert, Professor Christoph
• Authors: Barr, A. J., Dolan, M. J., Englert, C., and Spannowsky, M.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physics Letters B
• Publisher: Elsevier BV
• ISSN: 0370-2693
• ISSN (Online): 1873-2445
• Copyright Holders: Copyright © 2014 The Authors
• First Published: First publishes in Physics Letters B
• Publisher Policy: Reproduced under a Creative Commons License