Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ- tt‾ and νν‾bb‾ final states using 140 fb-1 of data collected with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00585401" target="_blank" >RIV/68378271:_____/24:00585401 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10493884

Výsledek na webu

<a href="https://hdl.handle.net/11104/0356132" target="_blank" >https://hdl.handle.net/11104/0356132</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP02(2024)197" target="_blank" >10.1007/JHEP02(2024)197</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ- tt‾ and νν‾bb‾ final states using 140 fb-1 of data collected with the ATLAS detector

Popis výsledku v původním jazyce

A search for a heavy CP-odd Higgs boson, A, decaying into a Z boson and a heavy CP-even Higgs boson, H, is presented. It uses the full LHC Run 2 dataset of pp collisions at ss ​ = 13 TeV collected with the ATLAS detector, corresponding to an integrated luminosity of 140 fb−1−1. The search for A → ZH is performed in the ℓ+ℓ−tt‾ℓ+ℓ−tt and νν‾bb‾ννbb final states and surpasses the reach of previous searches in different final states in the region with mHH​ > 350 GeV and mAA​ > 800 GeV. No significant deviation from the Standard Model expectation is found. Upper limits are placed on the production cross-section times the decay branching ratios. Limits with less model dependence are also presented as functions of the reconstructed m(tt‾tt) and m(bb‾bb) distributions in the ℓ+ℓ−tt‾ℓ+ℓ−tt and νν‾bb‾ννbb channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models.

Název v anglickém jazyce

Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ- tt‾ and νν‾bb‾ final states using 140 fb-1 of data collected with the ATLAS detector

Popis výsledku anglicky

A search for a heavy CP-odd Higgs boson, A, decaying into a Z boson and a heavy CP-even Higgs boson, H, is presented. It uses the full LHC Run 2 dataset of pp collisions at ss ​ = 13 TeV collected with the ATLAS detector, corresponding to an integrated luminosity of 140 fb−1−1. The search for A → ZH is performed in the ℓ+ℓ−tt‾ℓ+ℓ−tt and νν‾bb‾ννbb final states and surpasses the reach of previous searches in different final states in the region with mHH​ > 350 GeV and mAA​ > 800 GeV. No significant deviation from the Standard Model expectation is found. Upper limits are placed on the production cross-section times the decay branching ratios. Limits with less model dependence are also presented as functions of the reconstructed m(tt‾tt) and m(bb‾bb) distributions in the ℓ+ℓ−tt‾ℓ+ℓ−tt and νν‾bb‾ννbb channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2024

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

55

Strana od-do

197

Kód UT WoS článku

001185484300001

EID výsledku v databázi Scopus

2-s2.0-85190986940