Constraining off-shell Higgs boson production and the Higgs boson total width using WW → ℓνℓν final states with the ATLAS detector
- NázevTitle
- Constraining off-shell Higgs boson production and the Higgs boson total width using WW → ℓνℓν final states with the ATLAS detectorConstraining off-shell Higgs boson production and the Higgs boson total width using WW → ℓνℓν final states with the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, B. Ali, K. Augsten, B. Bergmann, P. Fiedler, Z. Hubáček, V. Lysenko, S. Mondal, M. Myška, R. Novotný, V. Petousis, S. Pospíšil, K. Smolek, P. Smolyanskiy, A. Sopczak, V. Vacek, P. Vokáč, O. Zaplatílek
- Klíčová slovaKeywords
- lhc, atlas
- ExperimentCollaboration
- ATLAS
- DOIDOI
- 10.1016/j.physletb.2025.139898
- Časopis / citaceJournal / citation
- Physics Letters B 870, 139898 (2025) · ISSN 0370-2693
- RokYear
- 2025
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Výzkum základních stavebních kamenů hmoty s využitím špičkových technologiíFundamental constituents of matter through frontier technologies; Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.; CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)
- CitovánoCited by
- 20 (INSPIRE-HEP)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
A measurement of off-shell Higgs boson production is performed in the H * → WW channel. The measurement uses a proton–proton collision dataset with an integrated luminosity of 140 fb−1 collected at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Final states in which both W bosons decay leptonically are targeted, and events are categorised based on the flavour of the final-state leptons, the jet multiplicity, and the output of neural network-based classifiers. The data are found to be compatible with the Standard Model expectation. An observed (expected) upper bound on the 95 % symmetric confidence level interval is set on the rate of off-shell Higgs boson production at a value of 3.4 (4.4) times the Standard Model prediction. These results are combined with the results from the measurement of on-shell Higgs boson production in the same final states to obtain an observed (expected) upper bound at 95 % confidence level on the Higgs boson total width of 13.1 (17.3) MeV.
A measurement of off-shell Higgs boson production is performed in the H * → WW channel. The measurement uses a proton–proton collision dataset with an integrated luminosity of 140 fb−1 collected at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Final states in which both W bosons decay leptonically are targeted, and events are categorised based on the flavour of the final-state leptons, the jet multiplicity, and the output of neural network-based classifiers. The data are found to be compatible with the Standard Model expectation. An observed (expected) upper bound on the 95 % symmetric confidence level interval is set on the rate of off-shell Higgs boson production at a value of 3.4 (4.4) times the Standard Model prediction. These results are combined with the results from the measurement of on-shell Higgs boson production in the same final states to obtain an observed (expected) upper bound at 95 % confidence level on the Higgs boson total width of 13.1 (17.3) MeV.