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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68407700:21220/24:00378456 RIV/68407700:21340/24:00378456 RIV/68407700:21670/24:00378456

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICS LETTERS B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

849

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

25

Strana od-do

"138469-1"-"138469-25"

Kód UT WoS článku

001185312700001

EID výsledku v databázi Scopus

2-s2.0-85185283920