Abstract
This article presents a proposal for a new search channel for the Higgs boson decaying to two long-lived neutral particles, each of which decays to \( b\overline{b} \) at a displaced vertex. The decay length considered is such that the decay takes place within the LHC beampipe. We present a new data-driven analysis using jet substructure and properties of the tracks from the highly-displaced vertices. We consider a model with a 125 GeV Higgs boson with a significant branching fraction to decay via this mode, with the long-lived neutral particle having a mass in the range of 15-40 GeV and a decay length commensurate with the beam pipe radius. Such a signal can be readily observed with an integrated luminosity of 19.5 fb−1 at 8 TeV at the LHC.
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Halyo, V., Lou, H.K., Lujan, P. et al. Data driven search in the displaced \( b\overline{b} \) pair channel for a Higgs boson decaying to long-lived neutral particles. J. High Energ. Phys. 2014, 140 (2014). https://doi.org/10.1007/JHEP01(2014)140
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DOI: https://doi.org/10.1007/JHEP01(2014)140