LHC constraints on two-Higgs doublet models

Abstract

A new Higgs-like boson with mass around 126 GeV has recently been discovered at the LHC. The available data on this new particle is analyzed within the context of two-Higgs doublet models without tree-level flavour-changing neutral currents. Keeping the generic Yukawa structure of the Aligned Two-Higgs Doublet Model framework, we study the implications of the LHC data on the allowed scalar spectrum. We analyze both the CP-violating and CP-conserving cases, and a few particular limits with a reduced number of free parameters, such as the usual models based on discrete ${\mathcal{Z}}_2$ symmetries.

51 pages, 13 figures, 2 tables. v2: Discussion improved in Sec. 4, small typos corrected and references added. Matches version accepted by JHEP

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