L. De Paolis
A5044662428- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Radioactive Decay and Measurement Techniques
- Atomic and Subatomic Physics Research
- Quantum Mechanics and Applications
- Particle Detector Development and Performance
- Noncommutative and Quantum Gravity Theories
- Radiation Detection and Scintillator Technologies
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Biofield Effects and Biophysics
- X-ray Spectroscopy and Fluorescence Analysis
- High-pressure geophysics and materials
- Advanced Chemical Physics Studies
- Ionosphere and magnetosphere dynamics
- Black Holes and Theoretical Physics
- Atomic and Molecular Physics
- Advanced Semiconductor Detectors and Materials
- History and advancements in chemistry
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum chaos and dynamical systems
- Magnetic confinement fusion research
Istituto Nazionale di Fisica Nucleare
2018-2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2015-2024
University of Palermo
2024
Istituto Zooprofilattico Sperimentale del Piemonte Liguria e Valle d'Aosta
2023-2024
Technical University of Munich
2022
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2022
Enrico Fermi Center for Study and Research
2020-2022
Stefan Meyer Institute for Subatomic Physics
2021-2022
Czech Academy of Sciences, Institute of Physics
2022
University of Rome Tor Vergata
2018-2022
About a hundred years ago, the Russian biologist A. Gurwitsch, based on experiments with onion plants by measuring their growth rate, hypothesized that emit weak electromagnetic field somehow influences cell growth. This interesting observation remained fundamentally ignored scientific community; only in 1950s emission from some was measured using photomultiplier used single counting mode. Later, 1980s, several groups around world started extensive work to understand origin and role of this...
The SIDDHARTA-2 collaboration is performing research in the field of kaonic atoms spectroscopy. In this work, following an introduction on and their importance for development low-energy strong interaction theories, first result experiment (kaonic helium) presented. This measurement was promising view main goal experiment, i.e. deuterium transitions to 1s level, important model kaon-nucleon interaction. last part paper future plans measure new key quantities with beyond stat-of-the-art...
A large area silicon drift detectors (SDDs) system and its readout electronics have been developed by the SIDDHARTA-2 Collaboration, aiming to perform high-precision light kaonic atoms x-ray spectroscopy for investigation of strong interaction in low-energy QCD regime. To these measurements, a linear energy response good resolution are mandatory requirements system, be preserved along whole DAQ (analog digital) chain; such task is made even harder experimental environment particles...
Abstract The current work presents the optimization of large area silicon drift detectors developed by SIDDHARTA-2 collaboration for high precision x-ray measurements light exotic atom transitions. Two different radiation sources were employed in study: an tube, investigating energy resolution and charge collection efficiency device range 4000 eV–13 000 eV, a β − 90 Sr radioactive source measuring timing response, thus qualifying parameters inside semiconductor. study reports spectroscopic...
Pauli exclusion principle (PEP) violations induced by space-time noncommutativity, a class of universality for several models quantum gravity, are investigated the VIP-2 Lead experiment at Gran Sasso underground National Laboratory INFN. The experimental bound on noncommutative scale $\mathrm{\ensuremath{\Lambda}}$ excludes $\ensuremath{\theta}$-Poincar\'e far above Planck non anishing ``electriclike'' components ${\ensuremath{\theta}}_{\ensuremath{\mu}\ensuremath{\nu}}$, and up to...
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...
The SIDDHARTINO experiment at the DA{\Phi}NE Collider of INFN-LNF, pilot run for SIDDHARTA-2 which aims to perform measurement kaonic deuterium transitions fundamental level, has successfully been concluded. paper reports main results this run, including optimization various components apparatus, among degrader needed maximize fraction kaons stopped inside target, through measurements helium 2p level. obtained shift and width values are {\epsilon}_2p = E_exp-E_e.m 0.2 {\pm} 2.5(stat) 2(syst)...
Violations of the Pauli Exclusion Principle (PEP), albeit small, could be motivated by physics beyond Standard Model, ranging from violation Lorentz invariance to extra space dimensions. This scenario can experimentally constrained through dedicated, state-of-the-art X-ray spectroscopy, searching for a forbidden atomic transition L shell K already occupied two electrons. The VIP-2 Experiment located at underground Gran Sasso National Laboratories INFN (Italy) tests PEP violations introducing...
Investigations of possible violations the Pauli exclusion principle represent critical tests microscopic space-time structure and properties. Space-time noncommutativity provides a class universality for several quantum gravity models. In this context VIP-2 lead experiment sets strongest bounds, searching violating atomic transitions in lead, excluding θ-Poincaré noncommutative models far above Planck scale nonvanishing θ_{μν} electriclike components, up to 6.9×10^{-2} scales if θ_{0i}=0.
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...
Kaonic atoms measure the antikaon-nucleus interaction at almost zero relative energy, allowing one to determine basic low-energy quantum chromodynamics (QCD) quantities, namely, antikaon-nucleon ( K ¯ N) scattering lengths. The latter are important for extracting sigma terms which built on symmetry breaking part of Hamiltonian, thereby providing a chiral and SU(3) symmetries breaking. After discussing their relations kaonic atoms, we describe most precise measurement in literature hydrogen,...
Biophotons are an ultra-weak emission of photons in the visible energy range from living matter. In this work, we study germinating seeds using experimental technique designed to detect light extremely small intensity. The lentil and single bean was analyzed during whole germination process terms different spectral components through low pass filters count distributions various stages process. Although shape spectrum appears be very similar two samples used our experiment, analysis can...
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...
A large-area silicon drift detectors (SDDs) system has been developed by the SIDDHARTA-2 collaboration for high precision light kaonic atom X-ray spectroscopy at DAΦNE collider of Istituto Nazionale di Fisica Nucleare—Laboratori Nazionali Frascati. The SDDs’ geometry and electric field configuration, combined with their read-out electronics, make these devices suitable performing measurements in background collider. This work presents spectroscopic response SDDs during first exotic atoms run...
The aim of the SIDDHARTA-2 experiment is to perform first measurement ever width and shift induced by strong interaction 2p→1s energy transition kaonic deuterium. This ambitious goal implies a challenging task due very low X-ray yield deuterium, which why an accurate thorough characterization experimental apparatus mandatory before starting data-taking campaign. Helium-4 excellent candidate for this since it exhibits high in particular 3d→2p transition, roughly 100 times greater than that...
In this work, we report on tests performed with an experimental apparatus prototype based a broad-energy germanium detector aimed at investigating topical, foundational issues in quantum mechanics: i.e., possible violations of the spin-statistics connection and models dynamical wave function collapse. Our recent phenomenological analyses demonstrated importance pushing research new physics signal, predicted these fields, to energy range below 10 keV. We describe development dedicated data...
The VIP collaboration is performing high sensitivity tests of the Pauli Exclusion Principle for electrons in extremely low cosmic background environment underground Gran Sasso National Laboratory INFN (Italy). In particular, VIP-2 Open Systems experiment was conceived to put strong constraints on those violation models which respect so-called Messiah–Greenberg superselection rule. experimental technique consists introducing a direct current copper conductor, and searching X-rays emission...
Modern physics lays its foundations on the pillars of Quantum Mechanics (QM), which has been proven successful to describe microscopic world atoms and particles, leading construction Standard Model. Despite big success, old open questions at very heart, such as measurement problem wave function collapse, are still open. Various theories consider scenarios could encompass a departure from predictions standard QM, extra-dimensions or deformations Lorentz/Poincaré symmetries. At Italian...
Kaonic atom X-ray spectroscopy is a consolidated technique for investigations on the physics of strong kaon-nucleus/nucleon interaction. Several experiments have been conducted regarding measurement soft emission (<20 keV) from light kaonic atoms (hydrogen, deuterium, and helium). Currently, there new research activities within framework SIDDHARTA-2 experiment EXCALIBUR proposal focusing performing precise accurate measurements hard X-rays (>20 intermediate (carbon, aluminum, sulfur). In...
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...