Jets plus Missing Energy with an Autofocus
arXiv:1102.4615 · doi:10.1103/PhysRevD.83.095009
Abstract
Jets plus missing transverse energy is one of the main search channels for new physics at the LHC. A major limitation lies in our understanding of QCD backgrounds. Using jet merging we can describe the number of jets in typical background channels in terms of a staircase scaling, including theory uncertainties. The scaling parameter depends on the particles in the final state and on cuts applied. Measuring the staircase scaling will allow us to also predict the effective mass for Standard Model backgrounds. Based on both observables we propose an analysis strategy avoiding model specific cuts which returns information about the color charge and the mass scale of the underlying new physics.
15 pages, 9 figures, 3 tables
References in corpus (12)
- PYTHIA 6.4 Physics and Manual
- New parton distributions for collider physics
- Event generation with SHERPA 1.1
- Herwig++ Physics and Manual
- Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
- QCD radiation in the production of heavy colored particles at the LHC
- Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
- Model-Independent Jets plus Missing Energy Searches
- Dijet Searches for Supersymmetry at the LHC
- A Review of the Mass Measurement Techniques proposed for the Large Hadron Collider
- Measurement of the ratios of the Z/G* + >= n jet production cross sections to the total inclusive Z/G* cross section in ppbar collisions at sqrt(s) = 1.96 TeV
- Maximum Significance at the LHC and Higgs Decays to Muons