Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-HIG-21-016 | ||
| Search for exotic Higgs boson decays H $ \rightarrow \mathcal{A}\mathcal{A} \rightarrow 4\gamma$ with events containing two merged photons in proton-proton collisions at $\sqrt{s} = $ 13 TeV | ||
| CMS Collaboration | ||
| March 2022 | ||
| Abstract: The result of a direct search for the exotic Higgs boson decay $\mathrm{H}\rightarrow\mathcal{A}\mathcal{A}$, $\mathcal{A}\rightarrow\gamma\gamma$ is presented, using events with a final state containing two photons. The hypothetical particle $\mathcal{A}$ is a low-mass, boosted scalar decaying promptly to two highly merged photons, misreconstructed as a single photon-like object. The data were collected by the CMS experiment at the CERN LHC from proton-proton collisions at $\sqrt{s} = $ 13 TeV, corresponding to an integrated luminosity of 136 fb$^{-1}$. No excess of events above the estimated background is found. Upper limits on the branching fraction $\mathcal{B}(\mathrm{H} \rightarrow \mathcal{A}\mathcal{A} \rightarrow 4\gamma)$ of 0.9--3.3$\times$10$^{-3}$ are set at the 95% confidence level for masses of $\mathcal{A}$ in the range 0.1 $ < m_{\mathcal{A}} < $ 1.2 GeV. | ||
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Links:
CDS record (PDF) ;
Physics Briefing ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PRL 131 (2023) 101801. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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