Detecting an invisible Higgs boson at Fermilab Tevatron and CERN LHC
Institute of Theoretical Physics, School of Physics, Peking University, Beijing, 100871, P.R. China
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Published online: 21 July 2006
In this paper, we study the observability of an invisible Higgs boson at Fermilab Tevatron and CERN LHC through the production channel qq̄→ZH→ℓ+ℓ-+P/T, where/PT is reconstructed from the ℓ+ℓ- with ℓ=e or μ. A new strategy is proposed to eliminate the largest irreducible background, namely qq̄→Z(→ℓ+ℓ-)Z(→νν̄). This strategy utilizes the precise measurements of qq̄→Z(→ℓ+ℓ-)Z(→ℓ+ℓ-). For mH=120 GeV and with luminosity 30 fb-1 at Tevatron, a 5σ observation of the invisible Higgs boson is possible. For mH=114∼140 GeV with only 10 fb-1 luminosity at LHC, a discovery signal over 5σ can be achieved.
© Springer-Verlag, 2006