Electroweak couplings from tt → 6f and bb

Short description.

This benchmark is a challenge of reconstructing multi-jet final state with flavour tag and vertex charge. Main focus is currently on 6-jet (bbqqqq) and 4-jet (bbqqlv) final states.

bbbar final state is also being investigated with the same framework.

Main observables.

x-section measured with both beam polarizations, Polar angle (A_FB) measured with both beam polarizations

Control variables.

b-tag, c-tag, vertex charge, dEdx, M_top, M_W,

Physics quantities.

form factors, electroweak couplings, distinction between left- and right-handed couplings,

People.

Sohail Amjad, Adrian Irles, Yuichi Okugawa, Roman Pöschl, Ryo Yonamine

Reviewers.

Marcel Vos

References.

Sviatoslav's software (vertex charge)
- Not yet public, still need to clean up, but it works without modification. Contact to Roman Pöschl for the moment.
Sviatoslav's paper
- summary version : https://arxiv.org/abs/1709.04289
- full version will be shortly available online.
Git
- https://github.com/ILDAnaSoft/ILDbench_QQbar
ttbar paper pre-print
- https://arxiv.org/abs/1505.06020