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A New Observable for Identifying Dijet Resonances
- Source :
- Phys. Rev. Lett. 114, 041802 (2015)
- Publication Year :
- 2014
-
Abstract
- The development of techniques for identifying hadronic signals from the overwhelming multi-jet backgrounds is an important part of the Large Hadron Collider (LHC) program. Of prime importance are resonances decaying into a pair of partons, such as the Higgs and $\rm W$/$\rm Z$ bosons, as well as hypothetical new particles. We present a simple observable to help discriminate a dijet resonance from background that is effective even when the decaying resonance is not strongly boosted. We find consistent performance of the observable over a variety of processes and degree of boosts, and show that it leads to a reduction of the background by a factor of $3-5$ relative to signal at the price of $10-20\%$ signal efficiency. This approach represents a significant increase in sensitivity for Standard Model (SM) measurements and searches for new physics that are dominated by systematic uncertainties, which is true of many analyses involving jets - particularly in the high-luminosity running of the LHC.<br />Comment: 6 pages, 6 figures. Version to appear in PRL
- Subjects :
- High Energy Physics - Phenomenology
High Energy Physics - Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 114, 041802 (2015)
- Publication Type :
- Report
- Accession number :
- edsarx.1407.7037
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.114.041802