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HEP2025: 41st Conference on Recent Developments in High Energy Physics and Cosmology [NKUA]

from Tuesday 1 July 2025 (09:00) to Friday 4 July 2025 (17:00)
National and Kapodistrian University of Athens ( “Alkis Argyriadis” Amphitheatre)

        : Sessions
    /     : Talks
        : Breaks
1 Jul 2025
2 Jul 2025
3 Jul 2025
4 Jul 2025
AM
09:30
Session 1 (until 11:00)
09:30 Welcome from the Rector - Gerasimos Siasos (NKUA)  
10:00 Double Higgs Production via Vector Boson Fusion in SMEFT at the LHC - Athanasios Dedes (University of Ioannina)  
10:30 Searching for sub-GeV particle dark matter with Spherical Proportional Counters - Konstantinos Nikolopoulos (Hamburg University (DE))  
11:00 --- Coffee Break ---
11:30
Session 2 - George Leontaris (University of Ioannina (GR)) (until 13:15)
11:30 Development of Position Sensitive Deep Transient Spectroscopy as a background mitigation tool for CCD-based dark matter searches - Dr Vagelis Gkougkousis (University of Zurich)  
12:00 Constraining Dark Matter with Stellar Objects - Dr Ioannis Dalianis (University of Cyprus)  
12:30 Precision Gravity: From the LHC to LISA/ET - Rafael Porto (DESY)  
09:30
Session 4 - Spyros Argyropoulos (Aristotle University of Thessaloniki (GR)) (until 11:00)
09:30 Fibre Inflation - George Leontaris (University of Ioannina (GR))  
10:00 Cosmic Microwave Background measurements with microwave telescopes - Sotiris Loucatos (Université Paris-Saclay (FR) and APC)  
10:30 Muon Performance in ATLAS with Run-3 Data - Stylianos Angelidakis (National and Kapodistrian University of Athens (GR))  
11:00 --- Coffee Break ---
11:30
Session 5 - Athanasios Dedes (University of Ioannina) (until 13:00)
11:30 ATLAS highlights - Anna Sfyrla (Universite de Geneve (CH))  
12:15 CMS highlights - Hafeez Hoorani (Imperial College (GB))  
09:30
Session 7 - Sotiris Loucatos (Université Paris-Saclay (FR) and APC) (until 11:00)
09:30 On Final Results From the Muon $g\textrm{-}2$ Experiment at Fermilab - Dr Eremey Valetov (Michigan State Univeristy)  
10:00 Advancements in Resistive Silicon for 4D Tracking: Sensor Design, Environmental Testing, and Machine Learning-Based Reconstruction for Next-Generation HEP Detectors - Gaetano Barone (Brown University)  
10:30 Massive spin-2 particles: Bimetric gravity and its applications to cosmology - Ioannis Gialamas (National Institute of Chemical Physics and Biophysics)  
11:00 --- Coffee Break ---
11:30
Session 8 - Costas Papadopoulos (NCSR "Demokritos") (until 13:15)
11:30 Positive Geometry in Particle Physics and Cosmology - Johannes Henn (Max Planck Institute for Physics, Munich)  
12:15 New physics implications from the first CEvNS observation using solar $^8$B neutrinos - Dr Dimitrios Papoulias (IFIC (CSIC/Valencia U.))  
12:45 Towards numerical two-loop integrand reduction - Giuseppe Bevilacqua (NCSR Demokritos)  
09:30
Session 10 - George Diamandis (National and Kapodistrian University of Athens) (until 11:00)
09:30 Axion-Mediated Photonic Transitions in High-Q Dielectric Resonators - Evangelos Almpanis  
10:00 Probing the Universe's Topology through a Quantum System? - Evangelos Achilleas Paraskevas (University of Ioannina)  
10:20 Entanglement Entropy in Field Theory and Cosmology - Kostas Boutivas (University of Athens)  
10:40 Resolving the $H_0$ ​ tension in Horndeski Gravity - Maria Petronikolou (National Technical University of Athens, School of Applied Mathematical and Physical Sciences)  
11:00 --- Coffee Break ---
11:30
Session 11 - Georgios Anagnostou (Nat. Cent. for Sci. Res. Demokritos (GR)) (until 13:00)
11:30 The Giant Radio Array for Neutrino Detection (GRAND) - Prototypes and Path Forward - Dr Stavros Nonis (Hellenic Open University)  
12:00 GRAND experiment: Antenna Modeling, Galactic Background and Trigger Studies - George Vittakis (University of the Aegean)  
12:20 Probing Standard Model and Beyond via Elastic Neutrino Electron Scattering at the DUNE Near Detector - Panteleimon Melas  
12:40 Measurement of the top quark mass from boosted top antitop processes in proton proton collisions. - Eirini Siamarkou (National Technical Univ. of Athens (GR))  
PM
13:15 --- Lunch Break ---
14:30
Session 3 - Konstantinos Nikolopoulos (Hamburg University (DE)) (until 15:20)
14:30 Search for Exotic Dark Matter using Radioactive Sources - HongJoo Kim (Kyungpook National University)  
15:00 First Operations of the MIGDAL experiment at NILE - Lex Millins (University of Birmingham (GB))  
15:20
Young Researchers (part A) -Dr Ioannis Dalianis (University of Cyprus) (until 15:50)
15:20 Topological Defect Lines in the Free Boson RCFT - Anastasios Katsipis (EKPA)  
15:35 Equivariant Localization in Supergravity - Antonis Stefas (National and Kapodistrian University of Athens)  
13:00 --- Lunch Break ---
14:30
Session 6 - Georgios Daskalakis (Nat. Cent. for Sci. Res. Demokritos (GR)) (until 16:00)
14:30 CMS HGCAL Status - Dimitra Tsionou (National Taiwan University (TW))  
15:00 Measurements of the Higgs boson differential and production mode cross sections in the H->ZZ*->4l channel at √s = 13.6 TeV with the ATLAS detector - Konstantinos Sioulas (National and Kapodistrian University of Athens (GR))  
15:20 Data-Driven Background Estimation for tt̄H(H→bb̄) in the Dilepton Channel with CMS - Haris Painesis (National and Kapodistrian University of Athens (GR))  
15:40 Muon Reconstruction in the ATLAS Experiment for Phase-II - Dimitra Amperiadou (Aristotle University of Thessaloniki (GR))  
16:00
Young Researchers (part B) - Georgios Daskalakis (Nat. Cent. for Sci. Res. Demokritos (GR)) (until 17:00)
16:00 Study of anomalous Quartic Gauge Couplings in pp -> ZZ -> 2l2v production at √s = 13 TeV in ATLAS - Eleni Papadimitriou (Aristotle University of Thessaloniki (GR))  
13:15 --- Lunch Break ---
14:30
Session 9 - Kostas Kordas (Aristotle University of Thessaloniki (GR)) (until 16:00)
14:30 Probing X→YH signatures in the bbγγ final state with parametric neural networks - Manos Vourliotis (Univ. of California San Diego (US))  
15:00 Study of Higgs boson pair production in the $b\bar{b}\gamma\gamma$ final state with $308~\mathrm{fb}^{-1}$ of data collected at $\sqrt{s} = 13~\mathrm{TeV}$ and $13.6~\mathrm{TeV}$ by the ATLAS experiment - Spyros Merianos (Aristotle University of Thessaloniki (GR))  
15:20 Study of tt̄H(H→bb̄) Events in the Opposite-Sign Dilepton Channel with the CMS Experiment Focusing on the Mass Reconstruction Method - Polytimi Iosifidou (National and Kapodistrian University of Athens (GR))  
15:40 $t\bar{t}t\bar{t}$: NLO QCD corrections in production and decays for the $4\ell$ and $3\ell$ channels - Nikolaos Dimitrakopoulos (RWTH Aachen University)  
16:00 --- Coffee Break ---
16:30
Hellenic Society for the Study of High Energy Physics - Katerina Zachariadou (University of West Attica (GR)) (until 19:00)
16:30 Memorial for A. Filippas and T. Papadopoulou  
16:50 Report from General Secretary of Research & Innovation representative to CERN  
17:10 News from Open Symposium on the European Strategy for Particle Physics - Paris Sphicas (CERN/Athens)  
17:40 Report from EESFYE’s liaison to Industry - Prof. Nikos Manthos (University of Ioannina (GR))  
17:50 Report from EESFYE’s representative to ACCU - Ioannis Kopsalis (National Technical Univ. of Athens (GR))  
18:00 Report from EESFYE's outreach coordinator - Christine Kourkoumelis (National and Kapodistrian University of Athens (GR))  
18:10 CERN Alumni Network Programme and the Athens Group - Michele Barone (Nat. Cent. for Sci. Res. Demokritos (GR))  
18:20 Report from the EESFYE Executive Committee - Katerina Zachariadou (University of West Attica (GR))  
18:40 Round table for EESFYE matters  
20:00
Dinner (until 23:00)
13:00 --- Lunch Break ---
14:30
Young Researchers (part C) - Anthony Leisos (Hellenic Open University) (until 15:45)
14:30 Study of pp→HH→bbγγ production at \sqrt{s}=13TeV using ATLAS simulations - Eliana Kapsali (Aristotle University of Thessaloniki (GR))  
14:45 Implementation of the Artificial Retina Method for Offline Analysis of Test-Beam Data for the ATLAS New Small Wheel Micromegas - Athanasios Koutsostathis (National Technical Univ. of Athens (GR))  
15:00 Studies on high-η muons with the Run3 data of the ATLAS experiment. - Nikolaos Kamaras (National and Kapodistrian University of Athens (GR))  
15:15 Identification of Non-Collision Background Muons in the ATLAS Detector During Run-3 - Anna Vasileiadou (National and Kapodistrian University of Athens (GR))  
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