DOI: 10.17182/hepdata.144335.v1/t1
title: "Overview" of "Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a $Z$ boson in the $\ell^+\ell^- t\bar{t}$ and $\nu\bar{\nu}b\bar{b}$ final states using 140 fb$^{-1}$ of data collected with the ATLAS detector"

description: <b>Overview of HEPData Record</b><br>
<b>Upper limits on cross-sections:</b>

95% CL upper limit on ggF A-&gt;ZH(tt) production for tanb=0.5 95% CL upper limit on ggF A-&gt;ZH(tt) production for tanb=1 95% CL upper limit on ggF A-&gt;ZH(tt) production for tanb=5 95% CL upper limit on bbA A-&gt;ZH(tt) production for tanb=1 95% CL upper limit on bbA A-&gt;ZH(tt) production for tanb=5 95% CL upper limit on bbA A-&gt;ZH(tt) production for tanb=10 95% CL upper limit on ggF A-&gt;ZH(bb) production for tanb=0.5 95% CL upper limit on ggF A-&gt;ZH(bb) production for tanb=1 95% CL upper limit on ggF A-&gt;ZH(bb) production for tanb=5 95% CL upper limit on bbA A-&gt;ZH(bb) production for tanb=1 95% CL upper limit on bbA A-&gt;ZH(bb) production for tanb=5 95% CL upper limit on bbA A-&gt;ZH(bb) production for tanb=10 95% CL upper limit on bbA A-&gt;ZH(bb) production for tanb=20

<b>Kinematic distributions:</b>
 m(tt) distribution in the L3hi_Zin region of the lltt channel m(bb) distribution in the 2 b-tag 0L region of the vvbb channel m(bb) distribution in the 3p b-tag 0L region of the vvbb channel Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=450 GeV hypothesis with the bbA signal shown m(tt) distribution in the L3hi_Zin region of the lltt channel with the bbA signal shown Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=350 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=400 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=450 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=500 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=550 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=600 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=700 GeV hypothesis Fit discriminant m(lltt)-m(tt) in the signal region of the lltt channel for the mH=800 GeV hypothesis Fit discriminant mT(VH) in the 2 b-tag signal region of the vvbb channel for the mH=130 GeV hypothesis Fit discriminant mT(VH) in the 2 b-tag signal region of the vvbb channel for the mH=150 GeV hypothesis Fit discriminant mT(VH) in the 2 b-tag signal region of the vvbb channel for the mH=200 GeV hypothesis Fit discriminant mT(VH) in the 2 b-tag signal region of the vvbb channel for the mH=250 GeV hypothesis Fit discriminant mT(VH) in the 2 b-tag signal region of the vvbb channel for the mH=300 GeV...
description: A search for a heavy CP-odd Higgs boson, $A$, decaying into a $Z$ boson and a heavy CP-even Higgs boson, $H$, is presented using the full LHC Run 2 dataset of $pp$ collisions at $\sqrt{s}=13$ TeV collected with the ATLAS detector, corresponding to an integrated luminosity of $140$ fb$^{-1}$. The search for $A\to ZH$ is performed in the $\ell^+\ell^- t\bar{t}$ and $\nu\bar{\nu}b\bar{b}$ final states and extends the reach of previous searches into different final states in the region with $m_H&gt;350$ GeV and $m_A&gt;800$ GeV. No significant deviation from the Standard Model expectation is found. Upper limits on the production cross-section times the decay branching ratios are set. Limits with a reduced model dependence are also presented as functions of the reconstructed $m(t\bar{t})$ and $m(b\bar{b})$ distributions in the $\ell^+\ell^- t\bar{t}$ and $\nu\bar{\nu}b\bar{b}$ channel, respectively. In addition, an interpretation of the results in the context of two-Higgs-doublet models is given.