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Measurement of $\textit{CP}$ structure of Higgs-tau Yukawa coupling

by Vinaya Krishnan MB (behalf of CMS collaboration)

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Submission summary

As Contributors: Vinaya Krishnan Mb
Preprint link: scipost_202108_00025v1
Date submitted: 2021-08-13 12:04
Submitted by: Mb, Vinaya Krishnan
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
Approach: Experimental

Abstract

The CMS experiment at LHC has performed the first measurement of the CP structure of the Yukawa coupling between the Higgs boson and tau leptons. The measurement is based on data collected in proton-proton collisions at $\sqrt{s} = 13$ TeV during 2016-18, corresponding to an integrated luminosity of $137\text{ fb}^{-1}$. The analysis utilizes the angular correlation between the decay planes of tau leptons produced in Higgs boson decays, where dedicated analysis techniques are used to optimise the reconstruction of tau decay planes. The measured value of CP mixing angle is $4\pm17^{\circ}$, at $68\%$ confidence level. The pure $\textit{CP-}$odd hypothesis is excluded by $3.2$ standard deviations. The analysis strategies and the results of the measurement are presented.

Current status:
Has been resubmitted


Submission & Refereeing History

Resubmission 2203.08191v1 on 17 March 2022

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Submission scipost_202108_00025v1 on 13 August 2021

Reports on this Submission

Anonymous Report 1 on 2022-3-1 (Invited Report)

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