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arXiv · 2008.13442

A New Observable for Measuring CP Property of Top-Higgs Interaction

Qing-Hong Cao·Ke-Pan Xie·Hao Zhang·Rui Zhang
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Abstract

We propose a new dihedral angle observable to measure the CP property of the interaction of top quark and Higgs boson in the $t\bar{t}H$ production at the 14~TeV LHC. We consider two decay modes of the Higgs boson, $H\to b\bar{b}$ and $H\to \gamma\gamma$ and show that the dihedral angle distribution is able to distinguish the CP-even and the CP-odd hypothesis at 95\% confidence level with an integrated luminosity of $\sim 180~{\rm fb}^{-1}$.

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Qing-Hong Cao, Ke-Pan Xie, Hao Zhang, Rui Zhang. 2020-08-31. A New Observable for Measuring CP Property of Top-Higgs Interaction. https://arxiv.org/abs/2008.13442

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