Seeking the CP-odd Higgs via $h\rightarrow \eta_{c,b}\ell^+\ell^-$
| Autor: | Bečirević, Damir, Melić, Blaženka, Patra, Monalisa, Sumensari, Olcyr |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 97, 015008 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.97.015008 |
| Popis: | We show that the decay rates of the Higgs boson to a pseudoscalar quarkonium and a pair of leptons, $h\to P\ell^+\ell^-$ ($P\in\{\eta_c,\eta_b\}$), can be substantially enhanced in a scenario with two Higgs doublets with a softly broken $\mathbb{Z}_2$ symmetry (2HDM) when the CP-odd Higgs A is light, i.e. $m_A\lesssim m_h$. Depending on the type of 2HDM the enhancement of $\mathcal{B}(h\to \eta_{c,b}\tau^+\tau^-)$ with respect to its Standard Model value can be an order of magnitude larger, i.e. $\mathcal{O}(10^{-6}\div10^{-5})$. The decays $h\to P\ell^+\ell^-$ could therefore provide an efficient channel to investigate the presence of a light CP-odd Higgs $A$ and help to disentangle among various 2HDM scenarios. Comment: 19 pages, 6 figures |
| Databáze: | arXiv |
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