“School of Particles”
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| Paper IPM / Particles / 17383 |
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In this paper, we use the charged-current Higgs boson production process at future electron-proton colliders, e�â??p�â??Hj�?�ýe, with the subsequent decay of the Higgs boson into a bb�?�ï pair, to probe the Standard Model effective field theory with dimension-six operators involving the Higgs boson and the bottom quark. The study is performed for two proposed future high-energy electron-proton colliders, the Large Hadron Electron Collider (LHeC) and the Future Circular Collider (FCC-he) at the center-of-mass energies of 1.3 TeV and 3.46 TeV, respectively. Constraints on the CP-even and CP-odd Hbb�?�ï couplings are derived by analyzing the simulated signal and background samples. A realistic detector simulation is performed and a multivariate technique using the gradient Boosted Decision Trees algorithm is employed to discriminate the signal from background. Expected limits are obtained at 95% Confidence Level for the LHeC and FCC-he assuming the integrated luminosities of 1, 2 and 10 ab�â??1. We find that using 1 ab�â??1 of data, the CP-even and CP-odd Hbb�?�ï couplings can be constrained with accuracies of the order of 10�â??3 and 10�â??2, respectively, and a significant region of the unprobed parameter space becomes accessible.
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