N. Manthos

ORCID: 0000-0003-3247-8909
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About
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Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Dark Matter and Cosmic Phenomena
  • Cosmology and Gravitation Theories
  • Computational Physics and Python Applications
  • Neutrino Physics Research
  • Astrophysics and Cosmic Phenomena
  • Black Holes and Theoretical Physics
  • Medical Imaging Techniques and Applications
  • Particle Accelerators and Free-Electron Lasers
  • Atomic and Subatomic Physics Research
  • Radiation Detection and Scintillator Technologies
  • Distributed and Parallel Computing Systems
  • Advanced X-ray and CT Imaging
  • CCD and CMOS Imaging Sensors
  • Nuclear reactor physics and engineering
  • Radiation Therapy and Dosimetry
  • Gamma-ray bursts and supernovae
  • Nuclear physics research studies
  • Digital Radiography and Breast Imaging
  • advanced mathematical theories
  • Superconducting Materials and Applications
  • Scientific Computing and Data Management

University of Ioannina
2016-2025

Institute of High Energy Physics
2015-2024

University of Antwerp
2024

A. Alikhanyan National Laboratory
2014-2024

Saha Institute of Nuclear Physics
2021-2023

University of Delhi
2022-2023

Eötvös Loránd University
2023

Bhabha Atomic Research Centre
2019-2021

Joint Institute for Nuclear Research
2016

European Organization for Nuclear Research
1986-2014

The goal of the DIRAC experiment at CERN (PS212) is to measure $\pi^+\pi^-$ atom lifetime with 10% precision. Such a measurement would yield precision 5% on value $S$-wave $\pi\pi$ scattering lengths combination $|a_0-a_2|$. Based part collected data we present first result lifetime, $\tau=[2.91 ^{+0.49}_{-0.62}]\times 10^{-15}$ s, and discuss major systematic errors. This corresponds $|a_0-a_2|=0.264 ^{+0.033}_{-0.020} m_{\pi}^{-1}$.

10.1016/j.physletb.2005.05.045 article EN cc-by Physics Letters B 2005-06-01

We use fits to recent published CPLEAR data on neutral kaon decays $π^+π^-$ and $πeν$ constrain the CPT--violation parameters appearing in a formulation of system as an open quantum-mechanical system. The obtained upper limits are approaching range suggested by certain ideas concerning quantum gravity.

10.1016/0370-2693(95)01416-0 article EN cc-by-nc-nd Physics Letters B 1995-12-01

The CP violation parameter η+− is determined through the eigentime-dependent asymmetry in rates of initially tagged K0 and decaying to π+π−. obtained values are |η+−| = (2.312 ± 0.043stat. 0.030syst. 0.011τs) × 10−3 Φ+− 42.7° 0.9stat.° 0.6syst.° 0.9Δm° with Δ (527.4 2.9) 107h̵gs−1 measured same experiment using semileptonic decay channel.

10.1016/0370-2693(95)01295-0 article EN cc-by-nc-nd Physics Letters B 1995-11-01
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