Probing the CP nature of the top-Higgs Yukawa coupling in t(t)over-barH and tH events with H →b(b)over-bar decays using the ATLAS detector at the LHC

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73628065" target="_blank" >RIV/61989592:15310/24:73628065 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/24:00378456 RIV/68407700:21340/24:00378456 RIV/68407700:21670/24:00378456
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0370269324000285" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0370269324000285</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2024.138469" target="_blank" >10.1016/j.physletb.2024.138469</a>

Result language
angličtina
Original language name
Probing the CP nature of the top-Higgs Yukawa coupling in t(t)over-barH and tH events with H →b(b)over-bar decays using the ATLAS detector at the LHC
Original language description
The CP properties of the coupling between the Higgs boson and the top quark are investigated using 139 fb(-1) of proton-proton collision data recorded by the ATLAS experiment at the LHC at a centre-of-mass energy of root s = 13 TeV. The CP structure of the top quark-Higgs boson Yukawa coupling is probed in events with a Higgs boson decaying into a pair of b-quarks and produced in association with either a pair of top quarks, t (t) over barH or a single top quark, tH. Events containing one or two electrons or muons are used for the measurement. Multivariate techniques are used to select regions enriched in t (t) over barh and tH events, where dedicated SP-sensitive observables are exploited. In an extension of the Standard Model (SM) with a CP-odd admixture in the top-Higgs Yukawa coupling, the mixing angle between CP-even and CP-odd couplings is measured to be alpha = 11 degrees(+52 degrees)(-73 degrees) compatible with the SM prediction corresponding to alpha = 0.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Fundamental constituents of matter through frontier technologies</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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