HIPARCOS Emmy Noether Independent Junior Research Group

The Higgs boson as a bridge between Particle Physics and Cosmology

Our group is hosted by the working group of Prof. Karl Jakobs at the University of Freiburg, with which we have a long history of collaboration on searches and measurements involving the Standard Model Higgs boson decaying to b-quarks (see [P2-P5]).

See webpage of Prof. Jakobs' group

As a postdoctoral research associated Dr Argyropoulos has worked with the group of Prof. Usha Mallik at the University of Iowa on all the publications related to the project (see [P1-P5]).

We are currently collaborating with Prof. Mallik's group on the search for electroweak baryogenesis models in final states with top and bottom quarks (Dr W. Wang, Dr M. Liu, P. Sharma)

See webpage of Prof. Mallik's group

We have collaborated with the ATLAS group at the University of Liverpool (Prof. A. Mehta, Dr. C. Gwilliam, Dr. J. Kretzschmar) in a series of publications (see [P2-P5]).

Currently we are collaborating with Dr N. Rompotis on the searches for electroweak baryogenesis. Dr Rompotis is an expert in BSM Higgs physics and has pioneered the searches for electroweak baryogenesis in ATLAS.

See webpage of Dr N. Rompotis

PhD from Humboldt University in Berlin (2015)

MSc in High Energy Physics: Ecole Normale Superieure de Lyon (2011) & University of Geneva (2012)

Undergraduate studies: University of Athens (2009)

Interests: searching for new physics with the Higgs boson, dark matter/energy searches, Monte-Carlo event generators, statistics

Personal website - Contact

PhD from University Paris-Saclay (2020)

MSc in High Energy Physics: Univerity Paris-Sud XI (2017) & Kharkiv National University (2016)

Undergraduate studies: Kharkiv National University (2014)

Interests: new physics searches, top quark measurements, Monte-Carlo event generators

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Our Team

Our Collaborators

BSc and MSc studies at University of Bonn (2020)

Previous work (thesis): Search for ZZ and ZH in the 4b channel

Current work:  A→ZH→lltt search, flavour tagging

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BSc and MSc studies at Aristotle University of Thessaloniki (2020)

Previous work: Muon tomography, MicroMegas detectors for ATLAS New Small Wheel

Current work: A→ZH→vvbb search, Monte-Carlo event generators

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Dr Haisch is an expert in Dark Matter models and has introduced the 2HDM+pseudoscalar model that is considered the workhorse for the DM interpretations in extended Higgs sectors at the LHC (JHEP 05 (2017) 138).

We are collaborating with Dr Haisch on the phenomenological aspects of the DM searches at the LHC [3,4] and the study of unexplored signatures of DM in extended Higgs sectors.

Prof. Burrage is an expert on the phenomenology of Dark Energy/Modified Gravity and one of the developers of the first Dark Energy model that was used in the search for Dark Energy at the LHC (PRD 94 (2016) 084054).

We have collaborated with Prof. Burrage on the interpretation of the DE search in ATLAS [P1] and continue collaborating on the extension of these searches in final states with a Higgs boson [5].

Other members

- Sophia Papanastasiou (August 2022 - BOGY internship)

Prof. Englert is an expert on particle physics phenomenology and has proposed with Prof. Burrage the first model that was used in the search for Dark Energy at the LHC.

We have collaborated with Prof. Englert on the interpretation of the DE search in ATLAS [P1] and continue collaborating on the extension of these searches in final states with a Higgs boson [5].

Interns

Dr Haisch is an expert in Dark Matter models and has introduced the 2HDM+pseudoscalar model that is considered the workhorse for the DM interpretations in extended Higgs sectors at the LHC (JHEP 05 (2017) 138).

We are collaborating with Dr Haisch on the phenomenological aspects of the DM searches at the LHC [3,4] and the study of unexplored signatures of DM in extended Higgs sectors [9].

Dr Haisch is an expert in Dark Matter models and has introduced the 2HDM+pseudoscalar model that is considered the workhorse for the DM interpretations in extended Higgs sectors at the LHC (JHEP 05 (2017) 138).

We are collaborating with Dr Haisch on the phenomenological aspects of the DM searches at the LHC [3,4] and the study of unexplored signatures of DM in extended Higgs sectors.

Dr. Frederix is an expert on Monte-Carlo event generators and one of the main authors of the MadGraph5_aMC@NLO event generator.

We have collaborated in the past with Dr. Frederix on the inclusion of the MG5aMC generator in the ATLAS software and we continue collaborating on the improvement of the modelling of final states containing top quarks [8].