Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917662180769792 |
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| author | Vukašinović, N. Božović-Jelisavčić, I. Kačarević, G. Smiljanić, I. Vidaković, I. |
| author_facet | Vukašinović, N. Božović-Jelisavčić, I. Kačarević, G. Smiljanić, I. Vidaković, I. |
| contents | With the current precision of measurements by the ATLAS and CMS experiments, it cannot be excluded that a SM-like Higgs boson is a CP violating mixture of CP-even and CP-odd states. We explore this possibility here, assuming Higgs boson production in ZZ-fusion, at 1 TeV ILC, with unpolarized beams. The full simulation of SM background and fast simulation of the signal is performed, simulating 8 ab$^{-1}$ of data collected with the ILD detector. We demonstrate that the CP mixing angle $Ψ_{\mathrm{CP}}$ between scalar and pseudoscalar states can be measured with the statistical uncertainty of 3.8 mrad at 68% CL, corresponding to 1.44 $\cdot 10^{-5}$ for the CP parameter $f_\mathrm{CP}$, for the pure scalar state. This is the first result on sensitivity of an $e^{+}e^{-}$ collider to measure $f_\mathrm{CP}$ in the Higgs production vertex in vector boson fusion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_05820 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC Vukašinović, N. Božović-Jelisavčić, I. Kačarević, G. Smiljanić, I. Vidaković, I. High Energy Physics - Experiment High Energy Physics - Phenomenology With the current precision of measurements by the ATLAS and CMS experiments, it cannot be excluded that a SM-like Higgs boson is a CP violating mixture of CP-even and CP-odd states. We explore this possibility here, assuming Higgs boson production in ZZ-fusion, at 1 TeV ILC, with unpolarized beams. The full simulation of SM background and fast simulation of the signal is performed, simulating 8 ab$^{-1}$ of data collected with the ILD detector. We demonstrate that the CP mixing angle $Ψ_{\mathrm{CP}}$ between scalar and pseudoscalar states can be measured with the statistical uncertainty of 3.8 mrad at 68% CL, corresponding to 1.44 $\cdot 10^{-5}$ for the CP parameter $f_\mathrm{CP}$, for the pure scalar state. This is the first result on sensitivity of an $e^{+}e^{-}$ collider to measure $f_\mathrm{CP}$ in the Higgs production vertex in vector boson fusion. |
| title | Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC |
| topic | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.05820 |