Georgios Anagnostou

Senior Researcher

Dr. Georgios Anagnostou is a a Senior Researcher at the Institute of Nuclear & Particle Physics, NCSR Demokritos, Athens, Greece.

He received his diploma in electrical and computing engineering from NTU Athens and an MSc in telecommunications from Essex University (UK). After working briefly in the private sector he joined the Birmingham  University particle physics group. His PhD thesis concerned the measurement of fermion pairs cross-sections and asymmetries for OPAL (LEP) experiment. He has worked as a postdoctoral researcher for CMS experiment in Demokritos (2003-2007) and Aachen University (2007-2011). Since 2012, he is a member of the CMS group in the Institute of Nuclear and Particle Physics in Demokritos.

His main interest in experimental particle physics concerns possible BSM signals originating from final states with 2 invisible particles. This kind of signals are predicted by many interesting theories that include  invisible dark matter candidates or heavy top partners. Traditionally, missing energy related observables are used in these searches, making signal extraction difficult due to the similarity with the background shape. Another way to search for these final states is based on the mass reconstruction of the two unknown particles. Thus, a bump hunting is possible in the 2-Dimensional mass plane with the masses giving hints about the nature of new physics. More details can be found in this talk and this PhD thesis. The analysis effort is ongoing in Run2, trying to apply the generic method in other interesting topologies.

The last few years he is also interested in outreach activities and he is organizing the particle physics masterclasses in Demokritos. A full publication list can be found in Inspire.


Selected publications:

Anagnostou, G. “Searching in 2-Dimensional mass space for final states with 2 invisible particles”, J. High Energ. Phys. 2021, 112 (2021),, e-Print: 2009.10032 [hep-ph]

CMS Collaboration, “Beyond 2 Generations”, EPJ Web Conf. 126, 04001 (2016),

CMS Collaboration, “Search in two-dimensional mass space for TT’ → WbWb in the dilepton final state in proton-proton collisions at √s = 8 TeV”, CMS-PAS-B2G-12-025

G.Anagnostou, “Model Independent Search in 2-Dimensional Mass Space”, EPJ Web Conf. 71 (2014) 00006, ePrint: 1112.3379 [hep-ph]

CMS Collaboration, “Search for the MSSM Higgs bosons at the LHC”, AIP Conf.Proc. 1078 (2009) 192-194,

The LEP Collaborations, the LEP Electroweak Working Group “A combination of preliminary electroweak measurements and constraints on the Standard Model”, CERN-EP-2003-091, LEP-EWWG/2003-02                e-Print: 0312023 [hep-ex]

The Opal Collaboration, “Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-Pair Production at 189-209 GeV at LEP“, Eur. Phys.J.C 33, 173-212 (2004),

G.Anagnostou, “Fermion Pair physics at LEP2”, Eur.Phys.J.C 33 s700-s702 (2004),


Phone: +30 210 650 3514

Email: anagnog AT inp DOT demokritos DOT gr