Prospect study for measurement of $Hb\bar{b}$ coupling at the LHC and FCC-hh
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866909210883653632 |
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| author | Abdy, Zahra Najafabadi, Mojtaba Mohammadi |
| author_facet | Abdy, Zahra Najafabadi, Mojtaba Mohammadi |
| contents | This paper employs the $H+b+\text{jets}$ signature in proton-proton collisions to explore the structure of the $Hb\bar{b}$ couplings.The focus of the analysis lies in the decay of the Higgs boson into a photon pair, taking into account both reducible and irreducible backgrounds and a realistic simulation of the detector effects. To enhance the discrimination between signal and background, a multivariate analysis is employed to analyse the kinematic variables and optimise the signal-to-background ratio. The results indicate that the $H+b+\text{jets}$ process can significantly contribute to the precise measurement of CP-even and CP-odd couplings between the bottom quark and the Higgs boson at the LHC and FCC-hh. Finally, a novel asymmetry is introduced for the purpose of probing CP violation within the $Hb\bar{b}$ coupling, formulated exclusively based on lab-frame momenta. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_02667 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Prospect study for measurement of $Hb\bar{b}$ coupling at the LHC and FCC-hh Abdy, Zahra Najafabadi, Mojtaba Mohammadi High Energy Physics - Phenomenology This paper employs the $H+b+\text{jets}$ signature in proton-proton collisions to explore the structure of the $Hb\bar{b}$ couplings.The focus of the analysis lies in the decay of the Higgs boson into a photon pair, taking into account both reducible and irreducible backgrounds and a realistic simulation of the detector effects. To enhance the discrimination between signal and background, a multivariate analysis is employed to analyse the kinematic variables and optimise the signal-to-background ratio. The results indicate that the $H+b+\text{jets}$ process can significantly contribute to the precise measurement of CP-even and CP-odd couplings between the bottom quark and the Higgs boson at the LHC and FCC-hh. Finally, a novel asymmetry is introduced for the purpose of probing CP violation within the $Hb\bar{b}$ coupling, formulated exclusively based on lab-frame momenta. |
| title | Prospect study for measurement of $Hb\bar{b}$ coupling at the LHC and FCC-hh |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.02667 |