\begin{document}$H \rightarrow$\end{document} inv) for three independent channels, including two leptonic channels and one hadronic channel, at the CEPC. Based on the full simulation analysis, the upper limit of BR(\begin{document}$H \rightarrow$\end{document} inv) could reach 0.26% at the 95% confidence level. In the Stand Model (SM), the Higgs boson can only decay invisibly via \begin{document}$H\rightarrow ZZ^\ast\rightarrow\nu\overline{\nu}\nu\overline{\nu}$\end{document}, so any evidence of invisible Higgs decays that exceed BR(\begin{document}$H \rightarrow$\end{document} inv) of the SM will indicate a phenomenon that is beyond the SM (BSM). The invariant mass resolution of the visible hadronic decay system \begin{document}$ZH(Z \rightarrow qq$\end{document}, \begin{document}$ H \rightarrow$\end{document} inv) is simulated, and the physics requirement at the CEPC detector for reaching this is given."> Search for invisible decays of the Higgs boson produced at the CEPC -
  • [1]

    G. Bertoneet al., Rev. Mod. Phys.,90(4): 045002 (2018)

  • [2]

    D. Cloweet al., Astrophys. J. Lett.,648: L109-L113 (2006)

  • [3]

    A. Djouadiet al., Phys. Lett. B,709: 65-69 (2012)

  • [4]

    R. E. Shrocket al., Phys. Lett. B,110: 250 (1982)

  • [5]

    K. Belotskyet al., Phys. Rev. D,68: 054027 (2003)

  • [6]

    F. Anet al., Chin. Phys. C,43(4): 043002 (2019)

  • [7]

    M. Aaboudet al., Phys. Rev. Lett.,122(23): 231801 (2019)

  • [8]

    A. M Sirunyanet al., Phys. Lett. B,793: 520-551 (2019)

  • [9]

    Z. Chenet al., Chin. Phys. C,41(2): 023003 (2017)

  • [10]

    M. Ruanet al., Arbor, a new approach of the Particle Flow Algorithm. InInternational Conference on Calorimetry for the High Energy Frontier, pages 316-324, 2013

  • [11]

    T. Abeet al., The International Large Detector: Letter of Intent. 2010

  • [12]

    H. Abramowiczet al.,The International Linear Collider Technical Design Report - Volume 4: Detectors. Technical report, 2013

  • [13]

    C. Fu., Full simulation software at CEPC.http://cepcdoc.ihep.ac.cn/DocDB/0001/000167/002/CEPCNoteCover.pdf, 2019

  • [14]

    L. Sartiniet al., Nucl. Instrum. Meth. A, (2010)

  • [15]

    W. Kilianet al., Eur. Phys. J. C,71: 1742 (2011)

  • [16]

    D. Yuet al., Eur. Phys. J. C,80(1): 7 (2020)

  • [17]

    G. Cowan, Discovery sensitivity for a counting experiment with background uncertainty. 2020

  • [18]

    G. Cowanet al., Eur. Phys. J. C,71: 1554, 2011, [Erratum: Eur. Phys. J. C,73: 2501 (2013)]

  • [19]

    The ATLAS, CMS Collaborations, and the LHC Higgs Combination Group, Procedure for the LHC Higgs boson search combination in Summer 2011. Technical Report CMS-NOTE- 2011-005. ATL-PHYS-PUB-2011-11, CERN, Geneva, 2011

  • [20]

    CEPC Study Group, CEPC Conceptual Design Report: Volume 2 - Physics & Detector. 2018

  • [21]

    H. Zhaoet al., Chin. Phys. C,43(2): 023001 (2019)

  • [22]

    M. Cepedaet al., CERN Yellow Rep. Monogr,7: 221-584 (2019)

  • [23]

    A. Ishikawa, Search for invisible decays of the Higgs boson at the ILC,PoS, LeptonPhoton2019: 147, 2019

  • [24]

    J. de Blaset al., JHEP,01: 139 (2020)

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