Single top t-channel

AcerMC+Herwig vs AcerMC+Pythia

Single top t-channel ATLFAST-I samples produced with:

• AcerMC 3.5 + Herwig
• AcerMC 3.5 + Pythia

Atlas realease is 12.0.7.

Event selection

• 1 reconstructed lepton with Pt>30 GeV.
• At least two jets with Pt>30 GeV
• Jet multiplicity <= than 10 (for Pt>30 GeV jets)

Comparison of distributions

We show below the comparison of some kinematical variables distributions between AcerMC+Pythia (blue) and AcerMC+Herwig (yellow) MC samples. All distributions are normalized to unity.

Reconstructed leptons

Jets (basic distributions)

No event selection is applied for this set of 4 distributions.

Jets

b-tagged jet 1

b-tagged jet 2

untagged jet 1

untagged jet 2

Jet-parton matching

top-quark

W boson

b-quark

lepton

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