Techniques for improved heavy particle searches with jet substructure
| Autor: | Jonathan R. Walsh, Christopher K. Vermilion, Stephen D. Ellis |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Quantum chromodynamics
Physics Nuclear and High Energy Physics Particle physics Large Hadron Collider Hadron High Energy Physics::Phenomenology FOS: Physical sciences Jet (particle physics) Radiation Particle identification Nuclear physics Particle decay High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Substructure High Energy Physics::Experiment Nuclear Experiment |
| DOI: | 10.48550/arxiv.0903.5081 |
| Popis: | We present a generic method for improving the effectiveness of heavy particle searches in hadronic channels at the Large Hadron Collider. By selectively removing, or pruning, protojets from the substructure provided by a k_T-style jet algorithm, we improve the mass resolution for heavy decays and decrease the QCD background. We show that the protojets removed are typical of soft radiation and underlying event contributions, and atypical of accurately reconstructed heavy particles. Comment: 4 pages, 3 figures; 5 pages, provide definition of h_T, correct description of making cells massless; IR safe definition for parameter D_cut, more complete references, comparisons to matched QCD jet samples, slightly changed figures; correct references |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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