Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-HIG-21-008 | ||
| Direct search for the standard model Higgs boson decaying to a charm quark-antiquark pair | ||
| CMS Collaboration | ||
| March 2022 | ||
| Abstract: A search for $\mathrm{H}\to \mathrm{c}\bar{\mathrm{c}}$ in associated VH production with leptonically decaying V (W or Z) boson is performed with 138 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=$ 13 TeV in the CMS experiment. Novel charm jet identification and analysis techniques are used. A search for Z $\to \mathrm{c}\bar{\mathrm{c}}$ in VZ events is used to validate the strategy and yields a first observation at a hadron collider with a significance of 5.7 standard deviations. The analysis yields $\sigma(\mathrm{VH})\mathcal{B}(\mathrm{H}\to \mathrm{c}\bar{\mathrm{c}}) < $ 0.94 pb at 95% CL. For $\kappa_{\mathrm{c}}$, the Higgs-charm Yukawa coupling modifier, the observed 95% CL interval (expected upper limit) is 1.1 $ < |\kappa_{\mathrm{c}}| < $ 5.5 ($|\kappa_{\mathrm{c}}| < $ 3.4) -- the most stringent to date. | ||
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Links:
CDS record (PDF) ;
Physics Briefing ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PRL 131 (2023) 061801. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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