Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at √s=13 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10510346" target="_blank" >RIV/00216208:11320/24:10510346 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=p9Zpv8cetj" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=p9Zpv8cetj</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP06(2024)097" target="_blank" >10.1007/JHEP06(2024)097</a>

Result language
angličtina
Original language name
Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at √s=13 TeV
Original language description
A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons (a), followed by the prompt decay of each a boson to a bottom quark-antiquark pair, H -> aa -> b (b) over barb (b) over bar. The analysis is performed using a data sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb(-1). To reduce the background from standard model processes, the search requires the Higgs boson to be produced in association with a leptonically decaying W or Z boson. The analysis probes the production of new light bosons in a 15 < m(a) < 60 GeV mass range. Assuming the standard model predictions for the Higgs boson production cross sections for pp -> WH and ZH, model independent upper limits at 95% confidence level are derived for the branching fraction B(H -> aa -> b (b) over barb (b) over bar). The combined WH and ZH observed upper limit on the branching fraction ranges from 1.10 for m(a) = 20 GeV to 0.36 for m(a) = 60 GeV, complementing other measurements in the mu mu tau tau, tau tau tau tau and bbll (l = mu, tau) channels.
Czech name
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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
10300 - Physical sciences

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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