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} $

Benecke, Anna;Bruno, Giacomo;Bury, Florian;Caputo, Claudio;Bethani, Agni;et.al.
(2023) European Physical Journal C — Vol. 83 (2023)

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Authors
  • Benecke, AnnaUCLouvain
    Author
  • Bruno, GiacomoUCLouvain
    Author
  • Bury, FlorianUCLouvain
    Author
  • Caputo, ClaudioUCLouvain
    Author
  • David, PieterUCLouvain
    Author
  • Delaere, Christopheorcid-logoUCLouvain
    Author
  • Donertas, Izzeddin SuatUCLouvain
    Author
  • Giammanco, AndreaUCLouvain
    Author
  • Jaffel, KhawlaUCLouvain
    Author
  • Jain, SandhyaUCLouvain
    Author
  • Jain, SandhyaUCLouvain
    Author
  • Lemaitre, VincentUCLouvain
    Author
  • Mondal, KuntalUCLouvain
    Author
  • Taliercio, AngelaUCLouvain
    Author
  • Tran, Tu ThongUCLouvain
    Author
  • Vischia, PietroUCLouvain
    Author
  • Wertz, SébastienUCLouvain
    Author
  • Bethani, Agniorcid-logoUCLouvain
    Author
  • et. al.
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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 ${\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V}}$ by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138$\,\text {fb}^{-1}$. The 95% confidence level upper limit set on the branching fraction of the 125$\,\text {Ge}\hspace{-.08em}\text {V}$ Higgs boson to invisible particles, ${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$, is 0.54 (0.39 expected), assuming standard model production cross sections. The results of this analysis are combined with previous ${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$ searches carried out at ${\sqrt{s}=7}$, 8, and 13$\,\text {Te}\hspace{-.08em}\text {V}$ in complementary production modes. The combined upper limit at 95% confidence level on ${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$ is 0.15 (0.08 expected).
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Benecke, A., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Donertas, I. S., Giammanco, A., Jaffel, K., Jain, S., Jain, S., Lemaitre, V., Mondal, K., Taliercio, A., Tran, T. T., Vischia, P., Wertz, S., CMS, Bethani, A., & et al. (2023). 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} $. European Physical Journal C, 83. https://doi.org/10.1140/epjc/s10052-023-11952-7 (Original work published 2023)