Project started at Les Houches 2015 by Jon Butterworth, Paolo Francavilla, Frank Krauss, Carlo Pandini, Luca Parrozzi, …
Wiki page: http://phystev.cnrs.fr/wiki/2015:groups:tools:backgrounds
Processes to consider:
WW versus ttbar
14 TeV (maybe also 13 TeV), B-tag up to y=2.5 (allowing a veto on b-jets in this region if it helps). Also look at the impact of pseudo-top vetos.
Double leptonic channel:
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Consider WWjj as the signal. Look at WW scattering-like WWjj topologies. Study the contribution to the signal coming from double-resonant (DR), single-resonant (SR) and continuum (C) ttbar processes, and the sum.
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Consider WWj or WW as the signal. Look at jet-binning for for all WW (not just the VBS topology). Same study (DR/SR/C/Sum)
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Consider WWbb as the signal, motivated by WWH (H→bb). Same study (DR/SR/C/Sum).
Semi-leptonic channel:
- Consider ttbar as signal. Look at distortion in b-lepton mass from SR/C/Sum/WWbb-non-top contributions.
Wb versus t
Link to the ATLAS paper TBD
This would be a nice demo of some of the ideas above with a real measurement. Treat Wb excluding t as the signal, use the ATLAS Wb (unsubstracted) measurement and re-evaluate the single-top subtraction and systematics.