Abstract
This paper employs the H+b+jets signature in proton-proton collisions to explore the structure of the Hbb¯ 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 analyze the kinematic variables and optimise the signal-to-background ratio. The results indicate that the H+b+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 Hbb¯ coupling, formulated exclusively based on lab-frame momenta. Published by the American Physical Society 2024
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