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| CMS-PAS-HIG-22-006 | ||
| Search for Higgs boson pair production with one associated vector boson in proton-proton collisions at $ \sqrt{s}=$ 13 TeV | ||
| CMS Collaboration | ||
| 24 March 2023 | ||
| Abstract: A search is presented for Higgs boson pair production (HH) associated with a vector boson V (W or Z boson) with 138 fb$ ^{-1} $ of proton-proton (pp) collisions at a center-of-mass energy of 13 TeV with the CMS detector at the LHC at CERN. The processes in this search include $ \text{pp}\to\text{ZHH} $ and $ \text{pp}\to\text{WHH} $ production. All hadronic decays and leptonic decays of W and Z bosons involving electrons, muons, and neutrinos are utilized. The decay channel of the Higgs bosons is restricted to $ \text{b}\bar{\text{b}}\text{b}\bar{\text{b}} $. An observed (expected) upper limit at 95% confidence level (CL) is set at 294 (124) times the cross section from the standard model prediction of the $ \text{pp}\to\text{VHH} $ process. Constraints are also set on the modifier of the Higgs boson trilinear self-coupling $ \kappa_{\lambda} $, and on the coupling of two Higgs bosons with two vector bosons $ \kappa_{\text{VV}} $. The observed (expected) allowed intervals of these coupling modifiers from this search at 95 $ % \text{CL} $ are $ -$37.7 $< \kappa_{\lambda} < $ 37.2 ($ -$30.1 $< \kappa_{\lambda} < $ 28.9) and $ -$12.2 $< \kappa_{\text{VV}} < $ 13.5 ($ -$7.64 $< \kappa_{\text{VV}} < $ 8.90). In addition, a 95% CL upper limit is set at 43 (22) times the cross section of the $ \text{pp}\to\text{VHH} $ process when $ \kappa_{\lambda}= $ 5.5 and other couplings are set to standard model predictions. | ||
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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These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here.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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