Detecting an invisible Higgs boson at Fermilab Tevatron and CERN LHC

Abstract

In this paper, we study the observability of an invisible Higgs boson at Fermilab Tevatron and CERN LHC through the production channel $ q \bar{q} \to Z H \to \ell^+\ell^-+ \ptmiss $, where $\ptmiss$ is reconstructed from the ${\ell }^{+}{\ell }^{-}$ with $\ell =e$ or $\mu$. A new strategy is proposed to eliminate the largest irreducible background, namely $q\bar{q}\to Z(\to {\ell }^{+}{\ell }^{-})Z(\to \nu \bar{\nu })$. This strategy utilizes the precise measurements of $q\bar{q}\to Z(\to {\ell }^{+}{\ell }^{-})Z(\to {\ell }^{+}{\ell }^{-})$. For $m_H=120$ GeV and with luminosity $30f{b}^{-1}$ at Tevatron, a $5\sigma$ observation of the invisible Higgs boson is possible. For $m_H=114\sim 140$ GeV with only $10f{b}^{-1}$ luminosity at LHC, a discovery signal over $5\sigma$ can be achieved.

arXiv comment4 Revtex pages including 2 figures

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• Invisible Higgs Decay in a Supersymmetric Inverse Seesaw Model with Light Sneutrino Dark Matter
• Dark matter and Higgs boson collider implications of fermions in an abelian-gauged hidden sector
• Invisible Higgs boson decay in the littlest Higgs model with T-parity
• Invisible Higgs Decay at the LHeC
• H\to hh in the Mirror Model at the CERN Large Hadron Collider
• Spontaneous electro-weak symmetry breaking and cold dark matter
• Electroweak scale neutrinos and decaying dark matter