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

Result code in 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>
Alternative codes found
RIV/68407700:21220/25:00388979 RIV/68407700:21240/25:00388979 RIV/68407700:21340/25:00388979 RIV/68407700:21670/25:00388979 and 2 more
Result on the web
<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>

Result language
angličtina
Original language name
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
Original language description
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.
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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