Monotop effective theory

Author

​Benjamin Fuks

• IPHC Strasbourg / University of Strasbourg
• fuks@…

Description of the model

This model is an extension of the SM, including additional interactions with additional fields so that monotop signatures at colliders are made possible. It follows the model constructed in the paper

​arXiv:1106.6199: J. Andrea, B. Fuks and F. Maltoni, Monotops at the LHC.

Model files

• monotops.fr: the main model file.
• This model requires the Standard Model implementation of FeynRules.
• MonoTops.nb: this is an example Mathematica notebook that loads the model, calculates the Feynman rules and extract the model files within the UFO format.

Matrix element generator files

Several coupling strength are set by hand to zero. We refer to ​arXiv:1106.6199 for more informatiom. Please note that due to unusual color structures appearing in this model, it only works with the limited set of matrix element generators shown below.

monotops_FA.tgz	The model files for FeynArts.
monotops_UFO.tgz	The model files in UFO format (e.g. for MadGraph 5).

LHC events and cross sections

The five benchmark scenarios are described in ​arXiv:1106.6199. We use the following cuts, with jet being any (parton-level) light or b jet:

• deltaR(jet,jet) > 0.5
• eta(jet) < 2.5
• pt(jet) > 50 GeV

and consider hadronic monotop final state (three jets plus missing energy) at the LHC for a center-of-mass energy of 7 TeV.

Scenario 1: 200.000 events Scenario 2: 200.000 events Scenario 3: 200.000 events Scenario 4: 200.000 events Scenario 5: 200.000 events

Signal samples	Files to download	Cross section
S1.lhe.tgz
S2.lhe.tgz
S3.lhe.tgz
S4.lhe.tgz
S5.lhe.tgz

Background samples

Files to download

Cross section

Z(invisible) + 3 light jets: 10.000.000 events

zjjj.lhe.tgz

Z(invisible) + 2 light jets + 1 c-jet: 10.000.000 events

zjjc.lhe.tgz

Z(invisible) + 2 light jets + 1 b-jet: 10.000.000 events

zjjb.lhe.tgz

Z(invisible) + 1 light jets + 2 b-jet: 10.000.000 events

zjbb.lhe.tgz

Z(invisible) + 1 light jets + 1 b-jet + 1 c-jet: 10.000.000 events

zjbc.lhe.tgz

Z(invisible) + 1 light jets + 2 c-jet: 10.000.000 events

zjcc.lhe.tgz

Z(invisible) + 3 c-jet: 10.000.000 events

zccc.lhe.tgz

Z(invisible) + 2 c-jet + 1 b-jet: 10.000.000 events

zbcc.lhe.tgz

Z(invisible) + 2 b-jet + 1 c-jet: 10.000.000 events

zbbc.lhe.tgz

Z(invisible) + 3 b-jet: 10.000.000 events

zccc.lhe.tgz

Tevatron events and cross sections

The five benchmark scenarios are described in ​arXiv:1106.6199.