Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
Volume 26, Issue 19, Pages 3201-3218Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X11053900
Keywords
Invisible Higgs boson; Standard Model extensions
Categories
Funding
- Russian Ministry of Education and Science [02.740.11.0244, NS-4142.2010.2]
- RFBR [08-02-91002-CERN_a, 08-02-92499-CNRSL_a, 08-02-00473a]
- President of the Russian Federation [NS-5525.2010.2, MK-4317.2009.2]
- FAE [Pi520, Pi2598]
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New physics coupled to the Higgs boson may hide it in the standard decay channels to be investigated at LHC. We consider the models where new invisible dominant decay modes of the IIiggs boson are responsible for this hiding. We propose to study at LHC the weak boson production associated with heavy quarks: our analysis revealed that boson pair invariant mass distribution is sensitive to both mass and width of the invisible Higgs boson, if it is not too far from the weak boson pair threshold. We present tree-level results for the most relevant cases of top quarks and of bottom quarks in Standard Model extensions with large b-quark Yukawa coupling. We argue that QCD corrections do not spoil these results allowing for unambiguous extraction of the Higgs boson mass and width from the analysis of large enough amount of data.
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