A. Baniahmad
A5006811232- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- X-ray Spectroscopy and Fluorescence Analysis
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Advanced NMR Techniques and Applications
- Radiation Detection and Scintillator Technologies
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2018-2021
Politecnico di Milano
2018-2021
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2019
Sapienza University of Rome
2019
Istituto Nazionale di Fisica Nucleare
2019
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...
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,...
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.
A luminosity monitor, based on plastic scintillator detectors, has been developed for the SIDDHARTA-2 experiment aiming to perform high precision measurements of kaonic atoms and was installed in 2020 DAFNE $e^+e^-$ collider at LNF (Laboratori Nazionali di Frascati, INFN). The main goal this system is provide the~instantaneous integrated facility by measuring rate $K^+K^-$ correlated pairs emitted phi meson decay. This task requires an accurate timing DAQ signals, as well resolution below...
This article presents the kaonic atom studies performed at INFN National Laboratory of Frascati (Laboratori Nazionali di dell’INFN, LNF-INFN) since opening this field research DA Φ NE collider in early 2000. Significant achievements have been obtained by Exotic Atom Research (DEAR) and Silicon Drift Detector for Hadronic Timing Applications (SIDDHARTA) experiments on hydrogen, which required development novel X-ray detectors. The 2019 installation new SIDDHARTA-2 experiment to measure...
The interaction of antikaons (K − ) with nucleons and nuclei in the low-energy regime represents a very active research field hadron physics. A unique rather direct experimental access to antikaon-nucleon scattering lengths is provided by precision X-ray spectroscopy transitions low-lying states lightest kaonic atoms (i.e. hydrogen deuterium). In SIDDHARTA experiment at electron-positron collider DAFNE LNFINFN we measured most precise values strong observables conic hydrogen. on 1s ground...
The excellent quality kaon beam provided by the DA \Phi <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Φ</mml:mi></mml:math> NE collider of LNF-INFN (Italy) together with SIDDHARTA/SIDDHARTA-2 new experimental techniques, as very precise and fast-response X-ray detectors, allow to perform unprecedented measurements on light kaonic atoms crucial for a deeper understanding low-energy quantum chromodynamics (QCD) in strangeness sector. In this paper an...
Abstract The DAΦNE electron-positron collider of the Laboratori Nazionali di Frascati INFN is a worldwide unique low-energy kaon source and for this reason suitable physics like kaonic atoms kaon-nucleons/nuclei interaction studies. Kaonic are atomic systems where an electron replaced by negatively charged kaon, containing strange quark, which interacts in lowest orbits with nucleus also strong interaction. As result, their study offers opportunity to perform experiments equivalent...
The experimental studies of light kaonic atoms offer the unique opportunity to investigate kaon-nucleus interaction at threshold, performing experiments equivalent scattering vanishing relative energies without need an extrapolation.In this framework, SIDDHARTA-2 experiment is going perform first measurement deuterium 2p → 1s transition, which fundamental extract isospin-dependent antikaonnucleon lengths.The setup was installed on DAΦNE collider LNF-INFN in spring 2019 and presently...
The interaction of antikaons with nucleons and nuclei in the low-energy regime represents an active research field hadron physics still many important open questions. investigation light kaonic atoms is, this context, a unique tool to obtain precise information on interaction. energy shift broadening lowest-lying states such atoms, induced by kaon-nucleus strong interaction, can be determined high precision from atomic X-ray spectroscopy. This experimental method provides understand low at...
The DAFNE electron-positron collider of the Laboratori Nazionali di Frascati INFN is a worldwide unique low-energy kaon source, which being used to produce and study kaonic atoms by SIDDHARTA collaboration. X-ray measurements play an important role for understanding QCD in strangeness sector. Significant achievements have been obtained experiment, among which: most precise hydrogen measurement 1s level shift width induced presence strong interaction; upper limit yield deuterium K-series;...
Abstract X-ray spectroscopy of kaonic atoms provides a versatile tool to study the strong interaction at low energies via direct observation its influence on ground state hydrogen atoms. The SIDDHARTA experiment provided precise results energy shift and width 1s induced by interaction. To enable extraction antikaon-nucleon scattering lengths 0 1 , SIDDHARTA-2 aims determine in deuterium with precisions 30 eV 75 eV, respectively. This measurement is aggravated yield high background...