Compact Muon Solenoid
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| CMS-PAS-HIG-23-005 | ||
| Search for rare decays of the Higgs boson into a photon and a $ \rho $, $ \phi $ or $ \mathrm{K}^{*0} $ meson | ||
| CMS Collaboration | ||
| 4 April 2024 | ||
| Abstract: Higgs boson decays into a photon and a $ \rho^0 $(770), $ \phi $, or $ \mathrm{K}^{*0} $(892) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at $ \sqrt{s}= $ 13 TeV. Events are selected in which the mesons decay into pairs of charged pions, pairs of charged kaons, and charged kaon-pion pairs respectively. Depending on the Higgs boson production mode, different triggering and reconstruction techniques are adopted. The analysed data sets correspond to an integrated luminosity varying between 39.5 and 138 fb$ ^{-1} $, depending on the targeted final state. By combining these analysis categories, no significant excess above the background expectations is observed. Upper limits at the 95% confidence level on the Higgs boson branching fractions into $ \rho^0\gamma $, $ \phi\gamma $, and $ \mathrm{K}^{*0}\gamma $ are determined to be 3.74 $ \times$ 10$^{-4} $, 2.97 $ \times$ 10$^{-4} $, and 1.71 $ \times$ 10$^{-4} $, respectively. These results constitute the most stringent experimental limits to date. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to PLB. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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