Non-Global Logarithms in Filtered Jet Algorithms
arXiv:1002.4557 · doi:10.1007/JHEP05(2010)005
Abstract
We analytically and numerically study the effect of perturbative gluons emission on the "Filtering analysis", which is part of a subjet analysis procedure proposed two years ago to possibly identify a low-mass Higgs boson decaying into b\bar{b} at the LHC. This leads us to examine the non-global structure of the resulting perturbative series in the leading single-log large-N_c approximation, including all-orders numerical results, simple analytical approximations to them and comments on the structure of their series expansion. We then use these results to semi-analytically optimize the parameters of the Filtering analysis so as to suppress as much as possible the effect of underlying event and pile-up on the Higgs mass peak reconstruction while keeping the major part of the perturbative radiation from the b\bar{b} dipole.
47 pages, 25 figures, 1 figure and a few comments added, version accepted for publication in JHEP
References in corpus (23)
- PYTHIA 6.4 Physics and Manual
- Jet substructure as a new Higgs search channel at the LHC
- Pileup subtraction using jet areas
- The Catchment Area of Jets
- Top-tagging: A Method for Identifying Boosted Hadronic Tops
- Jet substructure as a new Higgs search channel at the LHC
- A precise determination of alpha_s from LEP thrust data using effective field theory
- Strategies to Identify Boosted Tops
- Non-perturbative QCD effects in jets at hadron colliders
- Super-leading logarithms in non-global observables in QCD?
- Top Jets at the LHC
- Determination of the strong coupling constant using matched NNLO+NLLA predictions for hadronic event shapes in e+e- annihilations
- On QCD resummation with kt clustering
- Reconstructing Sparticle Mass Spectra using Hadronic Decays
- Using jet mass to discover vector quarks at the LHC
- Standard Model Handles and Candles Working Group: Tools and Jets Summary Report
- Quantifying the performance of jet definitions for kinematic reconstruction at the LHC
- Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC
- Searching for t-bar t Resonances at the Large Hadron Collider
- Grand Unification and Light Color-Octet Scalars at the LHC
- Jet energy flow at the LHC
- On the universality of hadronisation corrections to QCD jets
- Light Higgs searches at the LHC using jet substructure