Search for Higgs boson decays into a pair of pseudoscalar particles in the γγτhadτhad final state using pp collisions at root s=13 TeV with the ATLAS detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00388200" target="_blank" >RIV/68407700:21220/25:00388200 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21240/25:00388200 RIV/68407700:21340/25:00388200 RIV/68407700:21670/25:00388200
Result on the web
<a href="https://doi.org/10.1007/JHEP03(2025)190" target="_blank" >https://doi.org/10.1007/JHEP03(2025)190</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP03(2025)190" target="_blank" >10.1007/JHEP03(2025)190</a>

Result language
angličtina
Original language name
Search for Higgs boson decays into a pair of pseudoscalar particles in the γγτhadτhad final state using pp collisions at root s=13 TeV with the ATLAS detector
Original language description
A search for exotic decays of the 125 GeV Higgs boson into a pair of new spin-0 particles, H -> aa, where one decays into a photon pair and the other into a tau-lepton pair, is presented. Hadronic decays of the tau-leptons are considered and reconstructed using a dedicated tagger for collimated tau-lepton pairs. The search uses 140 fb(-1) of proton-proton collision data at a centre-of-mass energy of root s = 13TeV recorded between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider. The search is performed in the mass range of the a boson between 10 GeV and 60 GeV. No significant excess of events is observed above the Standard Model background expectation. Model-independent upper limits at 95% confidence level are set on the branching ratio of the Higgs boson to the gamma gamma tau tau final state, B(H -> aa -> gamma gamma tau tau), ranging from 0.2% to 2%, depending on the a-boson mass hypothesis.
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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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