Search for non-resonant Higgs boson pair production in the 2b + 2ℓ + ETmiss final state in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10493863" target="_blank" >RIV/00216208:11320/24:10493863 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=S.goCVl5O3" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=S.goCVl5O3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP02(2024)037" target="_blank" >10.1007/JHEP02(2024)037</a>
Alternative languages
Result language
angličtina
Original language name
Search for non-resonant Higgs boson pair production in the 2b + 2ℓ + ETmiss final state in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector
Original language description
A search for non-resonant Higgs boson pair (HH) production is presented, in which one of the Higgs bosons decays to a b-quark pair (b-b) and the other decays to WWASTERISK OPERATOR, ZZASTERISK OPERATOR, or τ+τ-, with in each case a final state with ℓ+ℓ-+ neutrinos (ℓ = e, μ). The analysis targets separately the gluon-gluon fusion and vector boson fusion production modes. Data recorded by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13TeV at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb-1, are used in this analysis. Events are selected to have exactly two b-tagged jets and two leptons with opposite electric charge and missing transverse momentum in the final state. These events are classified using multivariate analysis algorithms to separate the HH events from other Standard Model processes. No evidence of the signal is found. The observed (expected) upper limit on the cross-section for non-resonant Higgs boson pair production is determined to be 9.7 (16.2) times the Standard Model prediction at 95% confidence level. The Higgs boson self-interaction coupling parameter κλ and the quadrilinear coupling parameter κ2V are each separately constrained by this analysis to be within the ranges [-6.2, 13.3] and [-0.17, 2.4], respectively, at 95% confidence level, when all other parameters are fixed.
Czech name
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Czech description
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Classification
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
10300 - Physical sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
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Volume of the periodical
2024
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
48
Pages from-to
37
UT code for WoS article
001380583300001
EID of the result in the Scopus database
2-s2.0-85190958560