Higgs self-coupling measurements at the LHC

• DOI: 10.1007/jhep10(2012)112
• Publication Date: 2012-10-18T18:39:51Z
• Authors: Matthew J. Dolan; Christoph Englert; Michael Spannowsky
• Keywords: Higgs sector

13 pages, 8 figures, 5 tables, references added<br/>Both the ATLAS and CMS collaborations have reported a Standard Model Higgs-like excess at around $m_h = 125$ GeV. If an SM-like Higgs particle is discovered in this particular mass range, an important additional test of the SM electroweak symmetry breaking sector is the measurement of the Higgs self-interactions. We investigate the prospects of measuring the Higgs self-coupling for $m_h=125 \gev$ in the dominant SM decay channels in boosted and unboosted kinematical regimes. We further enhance sensitivity by considering dihiggs systems recoiling against a hard jet. This configuration exhibits a large sensitivity to the Higgs self-coupling which can be accessed in subjet-based analyses. Combining our analyses allows constraints to be set on the Higgs self-coupling at the LHC.<br/>