D. Pietreanu
A5087327766- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radioactive Decay and Measurement Techniques
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Quantum Mechanics and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- History and advancements in chemistry
- Ionosphere and magnetosphere dynamics
- Biofield Effects and Biophysics
- Medical Imaging Techniques and Applications
- Muon and positron interactions and applications
- High-pressure geophysics and materials
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Atomic and Molecular Physics
- X-ray Spectroscopy and Fluorescence Analysis
- Earthquake Detection and Analysis
- Astrophysics and Cosmic Phenomena
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2016-2025
Czech Academy of Sciences, Institute of Physics
2012-2025
University of California, Santa Cruz
2023-2024
Istanbul University
2024
Atlas Scientific (United States)
2024
Rutherford Appleton Laboratory
2023-2024
University of Geneva
2024
The University of Adelaide
2022-2023
Boğaziçi University
2023
Northern Illinois University
2023
The $\bar{K}N$ system at threshold is a sensitive testing ground for low energy QCD, especially the explicit chiral symmetry breaking. Therefore, we have measured $K$-series x rays of kaonic hydrogen atoms DA$\Phi$NE electron-positron collider Laboratori Nazionali di Frascati, and determined most precise values strong-interaction energy-level shift width $1s$ atomic state. As x-ray detectors, used large-area silicon drift detectors having excellent timing resolution, which were developed...
The kaonic (3)He and (4)He X-rays emitted in the [Formula: see text] transitions were measured SIDDHARTA experiment. widths of 2p states determined to be text], respectively. Both results are consistent with theoretical predictions. width is much smaller than value by experiments performed 70's 80's, while was for first time.
The spin–statistics connection, in particular the Pauli exclusion principle (PEP), plays a very important role our comprehension of matter and nature. Presently, PEP violation, possible within some theories, generates lively debate; it has given birth to few experiments looking for tiny effects. violation experiment put strong limit on probability by electrons, using method searching forbidden atomic transitions copper target. In this paper we present experiment, obtained results future...
The VIolation of Pauli exclusion principle -2 experiment, or VIP-2 at the Laboratori Nazionali del Gran Sasso searches for X-rays from copper atomic transitions that are prohibited by principle. Candidate direct violation events come transition a 2p electron to ground state is already occupied two electrons. From first data taking campaign in 2016 we determined best upper limit [Formula: see text] probability such exists. Significant improvement control experimental systematics was also...
In this paper, we discuss the recent finalized analyses by KLOE experiment at DAΦNE: CPT and Lorentz invariance test with entangled K 0 K0 pairs, precision measurement of branching fraction decay + → π -π (γ).We also present status an ongoing analysis aiming to precisely measure ± mass.
The validity of the Pauli Exclusion Principle, a building block Quantum Mechanics, is tested for electrons. VIP (VIolation exclusion principle) and its follow-up VIP-2 experiments at Laboratori Nazionali del Gran Sasso search x-rays from copper atomic transition that are prohibited by Principle. candidate events, if they exist, originate $2p$ orbit electron to ground state which already occupied two present limit on probability Principle violation electrons set experiment 4.7 $\times$ 10...
The VIolation of Pauli (VIP) experiment (and its upgraded version, VIP-2) uses the Ramberg and Snow (RS) method (Phys. Lett. B 1990, 238, 438) to search for violations exclusion principle in Gran Sasso underground laboratory. RS consists feeding a copper conductor with high direct current, so that large number newly-injected conduction electrons can interact atoms possibly cascade electromagnetically an already occupied atomic ground state if their wavefunction has wrong symmetry respect...
One of the fundamental rules nature and a pillar in foundation quantum theory thus modern physics is represented by Pauli Exclusion Principle. We know that this principle extremely well fulfilled due to many observations. Numerous experiments were performed search for tiny violation rule various systems. The experiment VIP at Gran Sasso underground laboratory searching possible small violations Principle electrons leading forbidden X-ray transitions copper atoms. aiming test with high...
The structure of $^{34}\mathrm{Si}$ was studied through $\ensuremath{\gamma}$ spectroscopy separately in the ${\ensuremath{\beta}}^{\ensuremath{-}}$ decays $^{34}\mathrm{Mg}$ and $^{34}\mathrm{Al}$ at ISOLDE facility CERN. Different configurations were populated independently from two recently identified $\ensuremath{\beta}$-decaying states having spin-parity assignments ${J}^{\ensuremath{\pi}}={4}^{\ensuremath{-}}$ dominated by normal configuration...
In this paper, we discuss the recent finalized analyses by KLOE experiment at DAΦNE: CPT and Lorentz invariance test with entangled K 0 K0 pairs, precision measurement of branching fraction decay + → π -π (γ).We also present status an ongoing analysis aiming to precisely measure ± mass.
The antikaon-nucleon interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In this context, importance of kaonic deuterium x-ray spectroscopy has been well recognized, but no experimental results have yet obtained due difficulty measurement. To measure shift width 1s state with an accuracy 30 eV 75 eV, respectively, apparatus is under construction at Laboratori Nazionali di Frascati. A...
The SIDDHARTA experiment measured X-rays from kaonic helium atoms using, for the first time, gaseous 3He and 4He targets. Clear patterns of L-series were observed. By using accurate Monte Carlo simulations, absolute yields these X-ray transitions determined to be Y(3d → 2p) = 25.0 −5.8 +6.7 % (0.96 g/l), 23.1 −4.2 +6.0 (1.65 17.2 −9.5 +2.6 (2.15g/l). In addition, Y (nd 2p), with n > 3 also determined. provide valuable information understanding cascade processes as a function target density.
Data on the production of η mesons light nuclei near threshold are surveyed.The photoproduction 3 He and elastic scattering from this nucleus modelled in a multiple scheme positions poles both here neighbouring studied an optical potential approach.The 7 Li is compared to that within cluster model.The decay η-mesic through pion or nucleon emission also considered.
The Pauli Exclusion Principle (PEP) was introduced by the austrian physicist Wolfgang in 1925. Since then, several experiments have checked its validity. From 2006 until 2010, VIP (Violation of Principle) experiment took data at LNGS underground laboratory to test PEP. This looked for electronic 2p Is transitions copper, where 2 electrons are state before transition happens. These violate lack detection X-ray photons coming from these resulted a preliminary upper limit violation PEP 4.7 ×...
collider with new experimental techniques, as fast and precise Silicon-Drift X-ray detectors.The measurement of kaonic deuterium will be realized in the near future by SIDDHARTA-2, a major upgrade SIDDHARTA.
Abstract The Pauli exclusion principle (PEP), as a consequence or the spin-statistics connection, is one of basic principles modern physics. Being at very basis our understanding matter, it spurs lively debate on its possible limits, deeply rooted in foundations Quantum Field Theory. VIP (VIolation principle) experiment established world's best limit probability that PEP violated by electrons, using method searching for forbidden atomic transitions copper. We describe experimental and...
In this paper, we discuss the recent finalized analyses by KLOE experiment at DAΦNE: CPT and Lorentz invariance test with entangled K 0 K0 pairs, precision measurement of branching fraction decay + → π -π (γ).We also present status an ongoing analysis aiming to precisely measure ± mass.