PhD Student
Vassilis Tsourapis is a PhD student at the Institute of Nuclear and Particle Physics. He has graduated from the Physics department of the National and Kapodistrian University of Athens. He obtained his MSc Diploma on “Nuclear and Particle Physics” from the same department with his Msc Thesis about Supersymmetric Dark Matter: “Indirect Detection of Dark Matter through Neutrino signals coming from the Sun”.
His scientific interests include Neutrino detection, Supersymmetry, Astroparticle Physics and Dark Matter.
I am a PhD student currently working on next-to-next-to-leading order calculations (NNLO) for high energy scattering processes, in the framework of perturbative Quantum Chromodynamics. In order to test our comprehension of nature in a significant way we need the theoretical calculation of scattering amplitudes in an accuracy similar to the experimental one. The high-luminosity LHC at CERN will require the most precise theoretical predictions for the scattering amplitudes. NNLO and in several cases NNNLO calculations will be of paramount importance to achieve the required precision. Pursuing this ultimate goal within my dissertation I study the systematization of the way of finding the Canonical Basis of Master Integrals for a given two-loop family, and the extension of the OPP method for one-loop amplitudes to the next order.
Supervisor
Dr. Costas Papadopoulos, Director of Research, Institute of Nuclear and Particle Physics, National Center for Scientific Research “Demokritos”.
Education
2011 – 2015: Bachelor of Science in Physics, Department of Physics, National and Kapodistrian University of Athens.
2015 – 2017: Master of Science in Basic Physics with specialization to Nuclear and Particle Physics, Department of Physics, National and Kapodistrian University of Athens.
2018 – today: PhD student, Department of Physics, National and Kapodistrian University of Athens & Institute of Nuclear and Particle Physics, National Center for Scientific Research “Demokritos”.
Research interests
Particle Physics Phenomenology
Quantum Field Theory
Early Universe Physics Publications On the Catalysis of Electroweak Vacuum Decay by Black Holes at High Temperatures, D. Canko, I. Gialamas, G. Jelic – Cizmek, A. Riotto, N. Tetradis, European Physics Journal C (2018) 78:328, DOI: https://doi.org/10.1140/epjc/s10052-018-5808-y (arXiv: 1706.01364 [hep-th]). A simple F(R,φ) deformation of Starobinsky inflationary model, D. Canko, I. Gialamas, G. Kodaxis, arXiv: 1901.06296 [hep-th].
My name is Nikolaos Syrrakos and I am a PhD student currently working on calculating next-to-next-to-leading order (NNLO) corrections to scattering processes that are produced in high energy colliders, such as the LHC at CERN. The topic of my dissertation is the computation of two-loop Master Integrals with the method of differential equations. Following the LHC upgrade to High Luminosity-LHC, very precise theoretical predictions for scattering cross sections will be required to match the experimental accuracy, in order to determine any discrepancy between theory and experiment. A key ingredient of the required theoretical predictions is the computation of two-loop Master Integrals for the relevant scattering processes.
Supervisors
Dr. Konstantinos Papadopoulos, Institute of Nuclear and Particle Physics, National Center for Scientific Research “Demokritos”.Prof. Nikolaos Trakas, School of Applied Mathematics and Natural Sciences, National Technical University of Athens.
Education
(2014) BSc in Physics, Department of Physics, National and Kapodistrian University of Athens.
(2017) MSc in Physics, School of Applied Mathematics and Natural Sciences, National Technical University of Athens & National Center for Scientific Research “Demokritos”.
(2018 – today) PhD student, School of Applied Mathematics and Natural Sciences, National Technical University of Athens & Institute of Nuclear and Particle Physics, National Center for Scientific Research “Demokritos”.
Dimitris Stavropoulos is a PhD student at the Institute of Nuclear and Particle Physics working for the KM3NeT underwater neutrino experiment as a member of the Astroparticle Physics Group. He has graduated from the School of Applied Mathematical and Physical Sciences at the National Technical University of Athens (2011-2017). He has also obtained the MSc "Physics and Technological Applications" degree (2017-2019) from NTUA-NCSR "Demokritos". His research interests focus mainly on the study of the quality of the data collected by the KM3NeT-ARCA detector. For his MSc thesis he has carried out a long-term study of the performance of the ARCA detector. For his Bachelor thesis he performed a study of the dependence of the detection of atmospheric muons on sea depth using the first data KM3NeT-ARCA detector. He has also been involved in the calibration and tests of KM3NeT detector components performed in the DOMLab of INPP. In addition, he is a member of the "Calibration Working Group" and "Operation & Analysis Working Group" in the KM3NeT collaboration.