Measurement of the CP structure of the Yukawa interaction in Higgs boson decays to $\tau$ leptons
| Autor: | Cardini, Andrea, CMS Collaboration |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Particle physics
p p: scattering data analysis method coupling [Higgs particle] Yukawa [coupling] neural network 13000 GeV-cms Structure (category theory) CP [quantum number] Paris 2021/06/07 [talk] symmetry: CP interaction: Yukawa phase space statistical analysis scattering [p p] ddc:530 Higgs particle: leptonic decay structure Detectors and Experimental Techniques Physics leptonic decay [Higgs particle] Higgs particle: coupling gauge boson tau: pair production angular correlation CMS High Energy Physics::Phenomenology CP [symmetry] Yukawa [interaction] ATLAS Yukawa interaction coupling: Higgs pair production [tau] quantum number: CP measured [mixing angle] Higgs boson High Energy Physics::Experiment colliding beams [p p] p p: colliding beams Higgs [coupling] coupling: Yukawa Lepton talk: Paris 2021/06/07 mixing angle: measured experimental results |
| Zdroj: | Proceedings of Science / International School for Advanced Studies (LHCP2021), 209 (2021). doi:10.22323/1.397.0209 9th Large Hadron Collider Physics Conference, LHCP2021, Paris, France, 2021-06-07-2021-06-12 |
| DOI: | 10.3204/pubdb-2022-00022 |
| Popis: | 9th Large Hadron Collider Physics Conference, LHCP2021, Paris, France, 7 Jun 2021 - 12 Jun 2021; Proceedings of Science / International School for Advanced Studies (LHCP2021), 209 (2021). doi:10.22323/1.397.0209 The discovery of the Higgs boson in 2012 by the CMS and ATLAS collaborations marked the start of the exploration of the Higgs sector of particle physics. The properties of the Higgs sector under CP symmetry have been investigated mostly in its couplings to gauge bosons. With the full Run 2 data-taking period it became possible to study the CP properties of the Yukawa coupling of the Higgs to fermions, and in particular to tau leptons. This was done by reconstructing the decay planes of the two tau leptons and measuring their angular correlation. The measured mixing angle between CP-even and CP-odd couplings is (4��17)�� and is consistent with the Standard Model prediction of a pure CP-even coupling and allows to constrain the allowed phase space for possible BSM scenarios. A pure CP-odd hypothesis is excluded at 99.7% confidence level. Published by SISSA, Trieste |
| Databáze: | OpenAIRE |
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