• Open Access

Searches for Higgs boson pair production in the hhbbττ, γγWW*, γγbb, bbbb channels with the ATLAS detector

G. Aad et al. (ATLAS Collaboration)
Phys. Rev. D 92, 092004 – Published 5 November 2015

Abstract

Searches for both resonant and nonresonant Higgs boson pair production are performed in the hhbbττ, γγWW* final states using 20.3fb1 of pp collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the Large Hadron Collider. No evidence of their production is observed and 95% confidence-level upper limits on the production cross sections are set. These results are then combined with the published results of the hhγγbb, bbbb analyses. An upper limit of 0.69 (0.47) pb on the nonresonant hh production is observed (expected), corresponding to 70 (48) times the SM gghh cross section. For production via narrow resonances, cross-section limits of hh production from a heavy Higgs boson decay are set as a function of the heavy Higgs boson mass. The observed (expected) limits range from 2.1 (1.1) pb at 260 GeV to 0.011 (0.018) pb at 1000 GeV. These results are interpreted in the context of two simplified scenarios of the Minimal Supersymmetric Standard Model.

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  • Received 16 September 2015

DOI:https://doi.org/10.1103/PhysRevD.92.092004

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2015 CERN, for the ATLAS Collaboration

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Vol. 92, Iss. 9 — 1 November 2015

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