TY  - THES
AU  - Filatov, Oleg
TI  - Tau identification algorithms and study of the CP structure of the Yukawa coupling between the Higgs boson and tau leptons in CMS
IS  - DESY-THESIS-2023-005
PB  - Universität Hamburg
VL  - Dissertation
CY  - Hamburg
M1  - PUBDB-2023-01292
M1  - DESY-THESIS-2023-005
T2  - DESY-THESIS
SP  - 191
PY  - 2023
N1  - Dissertation, Universität Hamburg, 2023
AB  - The measurement of the CP properties of the Yukawa coupling of the Higgs boson to τleptons is presented. The data set used for the analysis is collected by the CMS experiment atthe LHC during the Run 2 data-taking period in proton-proton collisions at √s = 13 TeV andcorresponds to an integrated luminosity of 137 fb<sup>−1</sup>. The Yukawa coupling between the Higgsboson and τ leptons is parametrised in terms of the effective mixing angle α<sup>Hττ</sup>, where the valueα<sup>Hττ</sup> = 0◦(90◦) corresponds to the SM scenario of the pure CP-even (CP-odd) Hττ coupling.The angle between the decay planes of the τ leptons is used as the observable encoding the CP nature of the Higgs boson. The measurement is performed in the τ<sub>e</sub>τ<sub>h</sub> channel where oneτ lepton decays into an electron and the other hadronically. The results are combined with themeasurement in the τ<sub>q</sub>τ<sub>h</sub> and τ<sub>h</sub>τ<sub>h</sub> channels. The observed (expected) value of the effectivemixing angle for the combination is measured to be: α<sup>Hττ</sup> = −1 ± 19◦(0 ± 21◦) @68.3
LB  - PUB:(DE-HGF)3 ; PUB:(DE-HGF)11
DO  - DOI:10.3204/PUBDB-2023-01292
UR  - https://bib-pubdb1.desy.de/record/580449
ER  -