Towards an understanding of jet substructure
Jun 28, 2013
57 pages
Published in:
- JHEP 09 (2013) 029
- Published: Sep 5, 2013
e-Print:
- 1307.0007 [hep-ph]
Report number:
- CERN-PH-TH-2013-145,
- DCPT-13-86,
- IPPP-13-43,
- LPN13-036,
- MAN-HEP-2013-12
View in:
Citations per year
Abstract: (Springer)
We present first analytic, resummed calculations of the rates at which wide-spread jet substructure tools tag QCD jets. As well as considering trimming, pruning and the mass-drop tagger, we introduce modified tools with improved analytical and phenomenological behaviours. Most taggers have double logarithmic resummed structures. The modified mass-drop tagger is special in that it involves only single logarithms, and is free from a complex class of terms known as non-global logarithms. The modification of pruning brings an improved ability to discriminate between the different colour structures that characterise signal and background. As we outline in an extensive phenomenological discussion, these results provide valuable insight into the performance of existing tools and help lay robust foundations for future substructure studies.Note:
- 52 pages, 18 figures. Version to be published in JHEP: added an Appendix about Y-trimming and addressed several points raised by the referee
- QCD
- Hadronic Colliders
- Standard Model
- Jets
- quantum chromodynamics
- background
- color
- jet
- event shape analysis
References(85)
Figures(48)
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