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arXiv · 1308.6213

Data Driven Search in the Displaced $b\bar{b}$ Pair Channel for a Higgs Boson Decaying to Long-Lived Neutral Particles

Valerie Halyo·Hou Keong Lou·Paul Lujan·Wenhan Zhu
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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 $b\bar b$ 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 8TeV at the LHC.

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Valerie Halyo, Hou Keong Lou, Paul Lujan, Wenhan Zhu. 2013-12-02. Data Driven Search in the Displaced $b\bar{b}$ Pair Channel for a Higgs Boson Decaying to Long-Lived Neutral Particles. https://doi.org/10.1007/jhep01(2014)140

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