Measuring single-top-associated Higgs production at the HL-LHC

Submission summary

 As Contributors: Henning Bahl Arxiv Link: https://arxiv.org/abs/2107.10512v1 (pdf) Date submitted: 2021-07-23 08:39 Submitted by: Bahl, Henning Submitted to: SciPost Physics Proceedings Proceedings issue: DIS2021 Academic field: Physics Specialties: High-Energy Physics - Phenomenology Approach: Phenomenological

Abstract

Precision measurements of top-associated Higgs production are an important ingredient to unravel the $\mathcal{CP}$ nature of the Higgs boson. In this work, we constraint the $\mathcal{CP}$ nature of the top-Yukawa coupling taking into account all relevant inclusive and differential Higgs boson measurements. Based upon this fit, we show that it is crucial to disentangle single- and di-top-associated Higgs production for tightening indirect constraints on a $\mathcal{CP}$-odd top-Yukawa coupling in the future. In this context, we propose an analysis strategy for measuring $tH$ production at the HL-LHC without relying on assumptions about the Higgs $\mathcal{CP}$ character.

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