Telling the spin of the "Higgs boson" at the LHC

Abstract

We assume that the Higgs boson or a possible resonance---playing its role in strongly interacting models of electroweak symmetry breaking---has been discovered at the LHC and propose a search strategy to determine its spin based on two simple asymmetries in the ZZ, W+W- and t t-bar decays channels. We consider some benchmark values for its mass (in the interval from 182 GeV/c^2 to 1 TeV/c^2) and discuss the relative advantages of the different decay processes. A full analysis, including the background, is given. For a center-of-mass energy of 14 TeV, we find that the lowest integrated luminosity required to discriminate between the different spins is, depending on the process and the resonance mass, between 40 fb^{-1} and 250 fb^{-1}.

17 pages, 3 figures

References in corpus (8)

• PYTHIA 6.4 Physics and Manual
• Implications of CTEQ global analysis for collider observables
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• MCFM for the Tevatron and the LHC
• Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
• Aspects of CP violation in the HZZ coupling at the LHC
• Measuring spin and CP from semi-hadronic ZZ decays using jet substructure
• Possible experimental signatures at the LHC of strongly interacting electro-weak symmetry breaking

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• Jet substructure and probes of CP violation in Vh production
• Distinguishing `Higgs' Spin Hypotheses using gamma gamma and WW* Decays