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| CMS-PAS-EXO-24-034 | ||
| Search for light scalar particles from Higgs boson decays in exclusive final states with two muons and two hadrons | ||
| CMS Collaboration | ||
| 2025-07-11 | ||
| Abstract: A search for new scalar particles of $ \mathcal{O}$(GeV) mass in exclusive final states with muons and light hadrons is presented. The analysis uses proton-proton collision data produced at the LHC in 2016-2018 at a center of mass energy of 13 TeV and collected by the CMS experiment, corresponding to an integrated luminosity of 138 fb$ ^{-1} $. The search targets exotic decays of the Higgs boson to a pair of prompt or long-lived scalars with proper decay lengths up to 100 mm and masses within the range of 0.4-2 GeV. This mass window corresponds to a unique phase space where hadronic decays mostly consist only of pairs of light hadrons. The considered experimental signature is a collimated and prompt or displaced pair of muons and another pair of charged kaons or pions, arising from the decays of two new scalar particles. The analysis improves the sensitivity to very light scalar boson masses and demonstrates a novel approach to probe hadronic decays of light scalar bosons. | ||
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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These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here.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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