A search for decays of the Higgs boson to invisible particles in events with a top-antitop quark pair or a vector boson in proton-proton collisions at $$\sqrt{s} = 13\,\text {Te}\hspace{-.08em}\text {V} $$

Journal article

Abstract A search for decays to invisible particles of Higgs bosons produced in association with a top-antitop quark pair or a vector boson, which both decay to a fully hadronic final state, has been performed using proton-proton collision data collected at $${\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V}}$$ s = 13 Te V by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 $$\,\text {fb}^{-1}$$ fb - 1 . The 95% confidence level upper limit set on the branching fraction of the 125 $$\,\text {Ge}\hspace{-.08em}\text {V}$$ Ge V Higgs boson to invisible particles, $${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$$ B ( H → inv ) , is 0.54 (0.39 expected), assuming standard model production cross sections. The results of this analysis are combined with previous $${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$$ B ( H → inv ) searches carried out at $${\sqrt{s}=7}$$ s = 7 , 8, and 13 $$\,\text {Te}\hspace{-.08em}\text {V}$$ Te V in complementary production modes. The combined upper limit at 95% confidence level on $${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$$ B ( H → inv ) is 0.15 (0.08 expected).

Authors: Tumasyan, A; Adam, W; Andrejkovic, JW; Bergauer, T; Chatterjee, S

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: SpringerOpen
• Journal: The European Physical Journal C
• Volume: 83
• Issue: 10
• Pages: 933-933
• Publication date: 2023-10-16
• DOI: 10.1140/epjc/s10052-023-11952-7
• EISSN: 1434-6052
• ISSN: 1434-6044
• Language: English
• Keywords: Particle physics; Higgs boson; Database; Algorithm; Physics; Computer science