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

By Alan J. Barr, M. Dolan, Christoph R. Englert, Michael Spannowsky. 2013

132 citations recorded by the source corpus.

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.

View Paper: https://www.semanticscholar.org/paper/0b732a8de05210fbdaeaa8caef2234b75cf04da6

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Citations in the corpus

Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, background): “The HL-LHC can only determine this cubic coupling with O(100%) precision (see [297–299] and [189, 213, 300, 301]), and proposed lepton colliders with subTeV center-of-mass energies are expected to have similar or slightly better precisions (see [199, 302]).”
Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO (2014, background): “Higgs pair production will be relevant for the high-luminosity LHC and several phenomenological studies [38–47] have recently investigated the potential of detecting the signal for the process over the backgrounds in various Higgs decay channels.”
Effective field theory analysis of double Higgs boson production via gluon fusion (2015, background): “The highest sensitivity is expected to come from the bb̄τþτ− final state, which has been claimed to lead to a determination of c3 at the 40%–60% level at the highluminosity LHC with ffiffi s p 1⁄4 14 TeV and L 1⁄4 3 ab−1 [5,9,13,54].”
Higgs Physics at the HL-LHC and HE-LHC (2019, background): “For large positive values of absorptive imaginary parts lead to a significant dip in the combined rate at the threshold mhh ⇡ 2mt [348, 349, 311].”