https://doi.org/10.1140/epjc/s10052-015-3622-3
Regular Article - Theoretical Physics
hhjj production at the LHC
1
Theory Group, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
2
ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Melbourne, 3010, Australia
3
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK
4
DESY Theory Group, Notkestr. 85, 22607, Hamburg, Germany
5
Institute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham, DH1 3LE, UK
* e-mail: k.nordstrom.1@research.gla.ac.uk
Received:
8
July
2015
Accepted:
12
August
2015
Published online:
25
August
2015
The search for di-Higgs production at the LHC in order to set limits on the Higgs trilinear coupling and constraints on new physics is one of the main motivations for the LHC high-luminosity phase. Recent experimental analyses suggest that such analyses will only be successful if information from a range of channels is included. We therefore investigate di-Higgs production in association with two hadronic jets and give a detailed discussion of both the gluon- and the weak boson-fusion (WBF) contributions, with a particular emphasis on the phenomenology with modified Higgs trilinear and quartic gauge couplings. We perform a detailed investigation of the full hadronic final state and find that hhjj production should add sensitivity to a di-Higgs search combination at the HL-LHC with 3 
. Since the WBF and GF contributions are sensitive to different sources of physics beyond the Standard Model, we devise search strategies to disentangle and isolate these production modes. While gluon fusion remains non-negligible in WBF-type selections, sizeable new physics contributions to the latter can still be constrained. As an example of the latter point we investigate the sensitivity that can be obtained for a measurement of the quartic Higgs–gauge boson couplings.
© The Author(s), 2015
