Measurement of off-shell Higgs boson production in the H*→ZZ→4l decay channel using a neural simulation-based inference technique in 13 TeV pp collisions with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00642441" target="_blank" >RIV/68378271:_____/25:00642441 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/25:00388979 RIV/68407700:21240/25:00388979 RIV/68407700:21340/25:00388979 RIV/68407700:21670/25:00388979 a 2 dalších

Výsledek na webu

<a href="https://hdl.handle.net/11104/0374611" target="_blank" >https://hdl.handle.net/11104/0374611</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6633/adcd9a" target="_blank" >10.1088/1361-6633/adcd9a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of off-shell Higgs boson production in the H*→ZZ→4l decay channel using a neural simulation-based inference technique in 13 TeV pp collisions with the ATLAS detector

Popis výsledku v původním jazyce

A measurement of off-shell Higgs boson production in the H∗→ZZ→4ℓ decay channel is presented. The measurement uses 140 fb−1 of proton–proton collisions at √s=13 collected by the ATLAS detector at the Large Hadron Collider and supersedes the previous result in this decay channel using the same dataset. The data analysis is performed using a neural simulation-based inference method, which builds per-event likelihood ratios using neural networks. The observed (expected) off-shell Higgs boson production signal strength in the ZZ→4ℓ decay channel at 68% CL is 0.87−0.54+0.75​ (1.00−0.95+1.04​). The evidence for off-shell Higgs boson production using the ZZ→4ℓ decay channel has an observed (expected) significance of 2.5σ (1.3σ). The expected result represents a significant improvement relative to that of the previous analysis of the same dataset, which obtained an expected significance of 0.5σ.

Název v anglickém jazyce

Measurement of off-shell Higgs boson production in the H*→ZZ→4l decay channel using a neural simulation-based inference technique in 13 TeV pp collisions with the ATLAS detector

Popis výsledku anglicky

A measurement of off-shell Higgs boson production in the H∗→ZZ→4ℓ decay channel is presented. The measurement uses 140 fb−1 of proton–proton collisions at √s=13 collected by the ATLAS detector at the Large Hadron Collider and supersedes the previous result in this decay channel using the same dataset. The data analysis is performed using a neural simulation-based inference method, which builds per-event likelihood ratios using neural networks. The observed (expected) off-shell Higgs boson production signal strength in the ZZ→4ℓ decay channel at 68% CL is 0.87−0.54+0.75​ (1.00−0.95+1.04​). The evidence for off-shell Higgs boson production using the ZZ→4ℓ decay channel has an observed (expected) significance of 2.5σ (1.3σ). The expected result represents a significant improvement relative to that of the previous analysis of the same dataset, which obtained an expected significance of 0.5σ.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Reports on Progress in Physics

ISSN

0034-4885

e-ISSN

1361-6633

Svazek periodika

88

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

38

Strana od-do

057803

Kód UT WoS článku

001489129400001

EID výsledku v databázi Scopus

2-s2.0-105007211941