Abstract
The \(A\rightarrow Zh\) decay channel is studied to uncover a hypothetical extended scalar sector in the MSSM, or more generally in 2HDM type-2. It is sensitive to pseudoscalar boson masses between about 215 GeV (sum of the masses of the h and Z bosons) and 350 GeV (twice the top quark mass), in the low \(\tan \beta \) regions. The most sensitive final states are \(\ell \ell bb\) and \(\ell \ell \tau \tau \) because they cover the largest h boson branching fractions, and, unlike the case of the SM H production in gluon-gluon fusion, do not suffer from high backgrounds or high triggering thresholds thanks to the additional leptons coming from the Z boson decay.
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Notes
- 1.
It is higher than the SM \(gg\rightarrow H\) cross section for \(\tan \beta \simeq 1\).
- 2.
We assume here that \(m_A=m_H=m_{H^\pm }=300\) GeV.
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Caillol, C. (2018). Search for a Heavy Pseudoscalar Boson A Decaying to Zh in the \(\ell \ell \tau \tau \) Final State. In: Scalar Boson Decays to Tau Leptons. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-70650-4_10
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DOI: https://doi.org/10.1007/978-3-319-70650-4_10
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