Search for Higgs boson pair production in the $b\bar{b}W{W}^{\ast }$ decay mode at $\sqrt{s}=13$ TeV with the ATLAS detector

Abstract

A search for Higgs boson pair production in the $b\bar{b}W{W}^{\ast }$ decay mode is performed in the $b\bar{b}l\nu qq$ final state using 36.1 fb${}^{-1}$ of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. No evidence of events beyond the background expectation is found. Upper limits on the non-resonant $pp\to HH$ production cross section of 10 pb and on the resonant production cross section as a function of the $HH$ invariant mass are obtained. Resonant production limits are set for scalar and spin-2 graviton hypotheses in the mass range 500 to 3000 GeV.

49 pages in total, author list starting page 33, 12 figures, 13 tables, submitted to JHEP. All figures including auxiliary figures are available at <https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2016-27/>