Charged Higgs boson production via -fusion at the Large Hadron Collider
| Autor: | Stefano Moretti, Jaime Hernández-Sánchez, S. Rosado-Navarro, C. G. Honorato |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Particle physics
FOS: Physical sciences Type (model theory) 01 natural sciences 7. Clean energy Computer Science::Digital Libraries law.invention High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology (hep-ph) law 0103 physical sciences Sensitivity (control systems) 010306 general physics Collider Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology Yukawa potential Fermion 3. Good health High Energy Physics - Phenomenology Higgs boson Production (computer science) High Energy Physics::Experiment Energy (signal processing) |
| Zdroj: | Physical Review |
| Popis: | We analyse the production of a light charged Higgs boson at the Large Hadron Collider (LHC) via the quark-fusion mechanism $c \bar{b} \to H^- $ considering the decay channel $H^- \to \tau \bar \nu_\tau$ in the final state. We study this process in the framework of the 2-Higgs Doublet Model Type III (2HDM-III) which assumes a four-zero texture in the Yukawa matrices and a general Higgs potential, wherein the two Higgs doublets coupling to both up and down fermions do generate Flavour Changing Neutral Currents (FCNCs) yet the latter can be controlled by the texture when flavour physics constraints are considered. We consider the parameter space of the model where this signal is enhanced and in agreement with both theoretical constraints and experimental data. In particular, we exploit the setup with lepton-specific-like Yukawa couplings and assess the LHC sensitivity to such $H^\pm$ signals against the dominant {irreducible and} reducible backgrounds. We show that in our model BR$(H^\pm \to cb) \sim 0.1- 0.2$ and BR$(H^\pm \to \tau \nu) \sim 0.7-0.9$ so that, under these conditions, the prospects for $H^\pm$ detection in the 2HDM-III in the aforementioned production and decay channels are excellent assuming standard collider energy and luminosity conditions. Comment: 11 pages, 11 figures. Article published in Physical Review D. arXiv admin note: text overlap with arXiv:1811.05476 |
| Databáze: | OpenAIRE |
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