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Table Of Contents

Two-body decay (Z) results:

ZResults

Some efficiency curves for three-body analyses:

TopEfficiencies

Three-body decay (top vs. di-jets) results:

Here are some results using the SpartyJet script TopTag.py (also in boost2011/code in the SVN). I'm using the Herwig top and dijet samples from 2010, pT 500-600, available here:

The plots are all made with the SJ GUI.

  • cos(theta_h) for dijets (140 < m_jet < 210):
    dijets_cosThetaH.png

  • jet mass in dijet events:
    dijets_mjet.png

  • NSubjettines (tau3/tau2) for tops and dijets:
    nsubjettiness.png

  • cos(theta_h) for tops (140 < m_jet < 210):
    ttbar_cosThetaH.png

  • jet mass in ttbar events:
    ttbar_mjet.png

  • W mass (defined in several different ways) in top events (140 < m_jet < 210):
    ttbar_mW.png

  • Thaler and Wang z_cell variable:
    zcell.png

  • ATLAS z_cut variables (last four splittings):
    zcut.png

N-subjettiness with grooming (top vs. dijets)

Some initial indications suggest that some of the grooming procedures may affect the ability to utilize N-subjettiness as a top-tagger (positively and perhaps negatively). The goal of this study is to investigate what that affect may be with the BOOST 2010 benchmark samples, and then to see how much pile-up affects that result (the latter being the real goal).

-- ChristopherVermilion - 29 Aug 2011
I Attachment Action Size Date Who Comment
Miller_Tau32WithGrooming_26July2011.pdfpdf Miller_Tau32WithGrooming_26July2011.pdf manage 579 K 27 Jul 2011 - 20:39 DavidMiller  
TopTag.py.txttxt TopTag.py.txt manage 5 K 13 Jul 2011 - 01:58 ChristopherVermilion SpartyJet script that generates these (and other) results
dijets_cosThetaH.pngpng dijets_cosThetaH.png manage 18 K 13 Jul 2011 - 01:53 ChristopherVermilion cos(theta_h) for dijets (140 < m_jet < 210)
dijets_mjet.pngpng dijets_mjet.png manage 14 K 13 Jul 2011 - 01:54 ChristopherVermilion jet mass in dijet events
nsubjettiness.pngpng nsubjettiness.png manage 12 K 13 Jul 2011 - 01:55 ChristopherVermilion NSubjettines (tau3/tau2) for tops and dijets
ttbar_cosThetaH.pngpng ttbar_cosThetaH.png manage 16 K 13 Jul 2011 - 01:55 ChristopherVermilion cos(theta_h) for tops (140 < m_jet < 210)
ttbar_mW.pngpng ttbar_mW.png manage 14 K 13 Jul 2011 - 01:57 ChristopherVermilion W mass (defined in several different ways) in top events (140 < m_jet < 210)
ttbar_mjet.pngpng ttbar_mjet.png manage 14 K 13 Jul 2011 - 01:56 ChristopherVermilion jet mass in ttbar events
zcell.pngpng zcell.png manage 10 K 13 Jul 2011 - 01:57 ChristopherVermilion Thaler and Wang z_cell variable
zcut.pngpng zcut.png manage 23 K 13 Jul 2011 - 01:57 ChristopherVermilion ATLAS z_cut variables (last four splittings)
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Topic revision: r6 - 29 Aug 2011, ChristopherVermilion
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