CERN Accelerating science

$\ell\ell\lephad$ + $\ell\ell\hadhad

Distributions of the reconstructed $A$ boson mass for the combined $\ell\ell \hadhad$ and $\ell\ell \lephad$ final states (a) and the $\ell\ell\leplep$ final states (b). The signal shown in both cases corresponds to $\sigma (gg\to A) \times \text{BR}(A\to Zh) \times \text{BR}(h\to \tau\tau) = 50$~fb with $m_A$ = 340~GeV. The background contributions shown are the results of simulation and data-driven estimation methods. The background uncertainty is shown as a hatched area, and the overflow is included in the last bin.Caption not extracted

$\ell\ell bb

Distributions of the reconstructed $A$ boson mass for the $\ell\ell bb$ final state (a) and the $A$ boson transverse mass for the $\nu\nu bb$ final state (b). The signal shown in both cases corresponds to $\sigma (gg\to A) \times \text{BR}(A\to Zh) \times \text{BR}(h\to bb) = 500$~fb with $m_A$ = 500~GeV. The predicted distributions are shown after the profile likelihood fit to the data. The uncertainty is shown as a hatched area, and the overflow is included in the last bin.Caption not extracted

$A \rightarrow Zh$, $h \rightarrow \tau\tau

Combined observed and expected upper limits at the 95\% CL for the production cross section of a gluon-fusion-produced $A$ boson times its branching ratio to $Zh$ and branching ratio of $h$ to (a) $\tau\tau$ and (b) $bb$. The expected upper limits for subchannels are also shown.Caption not extracted

Type-I 2HDM, $m_{A} = 300$~GeVType-II 2HDM, $m_{A} = 300$~GeV

Lepton-specific 2HDM, $m_{A} = 300$~GeVFlipped 2HDM, $m_{A} = 300$~GeV

The interpretation of the cross-section limits in the context of the various 2HDM types as a function of the parameters $\tan\beta$ and $\cos(\beta-\alpha)$ for $m_{A} = 300$~GeV: (a) Type-I, (b) Type-II, (c) Lepton-specific, and (d) Flipped. Variations of the natural width up to $\Gamma_{A}/m_{A}$=5\% are taken into account. For Type-II and Flipped 2HDM, the $b$-associated production is included in addition to the gluon fusion. The narrow regions with no exclusion power in Type-I and Type-II at low $\tan\beta$ and far from $\cos(\beta-\alpha)=0$ are caused by vanishing branching ratios of $h\rightarrow bb$ and/or $h\rightarrow \tau\tau$. The blue shaded area denotes the area excluded by taking into account the constraints on the CP-odd Higgs boson derived by considering the $A\rightarrow \tau\tau$ decay mode after reinterpreting the results in Ref.~\cite{Aad:2014vgg}.Caption not extracted

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Type-I 2HDM, $\cos(\beta-\alpha) = 0.1$Type-II 2HDM, $\cos(\beta-\alpha) = 0.1$

Lepton-specific 2HDM, $\cos(\beta-\alpha) = 0.1$Flipped 2HDM, $\cos(\beta-\alpha) = 0.1$

The interpretation of the cross-section limits in the context of the various 2HDM types as a function of the parameters $\tan\beta$ and $m_A$ for $\cos(\beta-\alpha) = 0.1$: (a) Type-I (a), (b) Type-II, (c) Lepton-specific, and (d) Flipped. Variations of the natural width up to $\Gamma_{A}/m_{A}$=5\% are taken into account. The grey solid area indicates that the width is larger than 5\% of $m_{A}$. For Type-II and Flipped 2HDM, the $b$-associated production is included in addition to the gluon fusion. The blue shaded area denotes the area excluded by taking into account the constraints on the CP-odd Higgs boson derived by considering the $A\rightarrow \tau\tau$ decay mode after reinterpreting the results in Ref.~\cite{Aad:2014vgg}.Caption not extracted

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