Compact Muon Solenoid
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| CMS-PAS-HIG-18-026 | ||
| Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the $ \mathrm{b\bar{b}b\bar{b}} $ final state in proton-proton collisions at 13 TeV | ||
| CMS Collaboration | ||
| 4 December 2023 | ||
| Abstract: A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons ($ \mathrm{a} $), followed by the prompt decay of each a boson to a bottom quark-antiquark pair, $ \mathrm{H} \rightarrow \mathrm{a}\mathrm{a} \rightarrow \mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}} $. The analysis is performed using a data sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb$ ^{-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 is sensitive to the production of new light bosons in the 15 $ < \mathrm{m}_{\mathrm{a}} < $ 60 GeV mass range. Assuming the standard model cross sections for $ \mathrm{pp} \rightarrow \mathrm{WH} $ and $ \mathrm{ZH} $, with branching fractions $ \mathcal{B}(\mathrm{H} \rightarrow \mathrm{a}\mathrm{a})= $ 1 and $ \mathcal{B}(\mathrm{a} \rightarrow \mathrm{b}\bar{\mathrm{b}})= $ 1, masses of the a boson between 21 and 60 GeV are excluded. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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