A5034169153- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Physics of Superconductivity and Magnetism
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Superconductivity in MgB2 and Alloys
- Advanced NMR Techniques and Applications
- Magnetic confinement fusion research
- Neutrino Physics Research
- Superconducting Materials and Applications
- Atomic and Molecular Physics
- Computational Physics and Python Applications
- Quantum, superfluid, helium dynamics
- Hydrogen Storage and Materials
- Cold Atom Physics and Bose-Einstein Condensates
- Muon and positron interactions and applications
- Pulsars and Gravitational Waves Research
- Iron-based superconductors research
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2015-2024
University of Ferrara
2012-2024
Istituto Nazionale di Fisica Nucleare
2007-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2022
University of York
2020
Old Dominion University
2020
Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata
2019
Thomas Jefferson National Accelerator Facility
2019
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2019
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2019
Abstract Particle identification techniques are fundamental tools in nuclear physics experiments. Discriminating particles or nuclei produced interactions allows to better understand the underlying mechanisms. The energy interval of these reactions is very broad, from sub-eV up TeV. For this reason, many different approaches have been developed, often combining two more observables. This paper reviews several with emphasis on expertise gained within current scientific program Italian...
Abstract ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic hadronic calorimetry, hadron identification over wide kinematic range, near-complete hermeticity. This article describes design its expected in most relevant physics channels. It includes an evaluation choices, technical challenges to realizing R&D...
Based on the notion that local dark-matter field of axions or axionlike particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, perform first proof-of-principle experiment at Cooler Synchrotron (COSY) scan momenta near...
A multidimensional extraction of the structure function ratio σLT′/σ0 from hard exclusive e→p→e′nπ+ reaction above resonance region has been performed. The study was done based on beam-spin asymmetry measurements using a 10.6 GeV incident electron beam liquid-hydrogen target and CLAS12 spectrometer at Jefferson Lab. focus very forward regime (t/Q2 ≪ 1) with wide kinematic range xB in valence (0.17 < 0.55), virtualities Q2 ranging 1.5 GeV2 up to 6 GeV2. results their comparison theoretical...
This paper presents the successful application of a phase-lock feedback system to maintain resonance condition radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect 120 kHz precession in Cooler Synchrotron (COSY) storage ring. Real-time monitoring and filter signal allows relative phase between two be stabilized at arbitrary setpoint. The compensates for deviations by adjusting and/or as needed. With this method, variation demand standard deviation...
Measurements of the polarization observables <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi mathvariant="normal">Σ</a:mi><a:mo>,</a:mo><a:mi mathvariant="bold">P</a:mi><a:mo>,</a:mo><a:mi mathvariant="bold">T</a:mi><a:mo>,</a:mo><a:msub><a:mi mathvariant="bold">O</a:mi><a:mi mathvariant="bold">x</a:mi></a:msub><a:mo>,</a:mo><a:msub><a:mi mathvariant="bold">z</a:mi></a:msub></a:mrow></a:math> for reaction <i:math...
The spin structure functions of the proton and deuteron were measured during EG4 experiment at Jefferson Lab in 2006. Data collected for longitudinally polarized electron scattering off ${\mathrm{NH}}_{3}$ ${\mathrm{ND}}_{3}$ targets, ${Q}^{2}$ values as small 0.012 0.02 ${\mathrm{GeV}}^{2}$, respectively, using CEBAF Large Acceptance Spectrometer. This is archival paper that summarizes previously reported results ${g}_{1}$, ${A}_{1}{F}_{1}$, their moments...
This Letter reports the successful use of feedback from a spin polarization measurement to revolution frequency $0.97\text{ }\text{ }\mathrm{GeV}/c$ bunched and polarized deuteron beam in Cooler Synchrotron (COSY) storage ring order control both precession rate ($\ensuremath{\approx}121\text{ }\mathrm{kHz}$) phase horizontal component. Real time synchronization with radio (rf) solenoid made possible rotation out plane, yielding demonstration method manipulate polarization. In particular,...
Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this true, then hyperon-nucleon interactions will play a significant part star equation state (EOS). Yet, compared other elastic scattering processes, there very little data $\Lambda$-$N$ scattering. This experiment utilized CLAS detector study $\Lambda p \rightarrow \Lambda p$ cross section incident $\Lambda$ momentum range 0.9-2.0 GeV/c. first reaction several decades. The new sections have...
Background: Energetic quarks in nuclear DIS propagate through the medium. Processes that are believed to occur inside nuclei include quark energy loss medium-stimulated gluon bremsstrahlung and intra-nuclear interactions of forming hadrons. More data required gain a more complete understanding these effects. Purpose: To test theoretical models parton transport hadron formation, we compared their predictions for kinematic dependence pion production nuclei. Methods: We have measured...
We report the first measurements of deep inelastic scattering spin-dependent azimuthal asymmetries in back-to-back dihadron electroproduction process. In this reaction, two hadrons are produced opposite hemispheres along z axis virtual photon-target nucleon center-of-mass frame, with hadron current-fragmentation region and second target-fragmentation region. The data were taken longitudinally polarized electron beams 10.2 10.6 GeV incident on an unpolarized liquid-hydrogen target using...
The exclusive electroproduction of π+ mesons was studied with the HERMES spectrometer at DESY laboratory by scattering 27.6 GeV positron and electron beams off an internal hydrogen gas target. virtual-photon cross sections were measured as a function Mandelstam variable t squared four momentum −Q2 exchanged virtual photon. A model calculation based on Generalized Parton Distributions is in fair agreement data low values |t| if power corrections are included. Regge formalism gives good...
The stable spin direction of polarized particles in a storage ring was determined first experimentally, through an accurate measurement the tune and its response to longitudinal magnetic fields.
The observation of beam spin asymmetries in two-pion production semi-inclusive deep inelastic scattering off an unpolarized proton target is reported. data presented here were taken the fall 2018 with CLAS12 spectrometer using a 10.6 GeV longitudinally spin-polarized electron delivered by CEBAF at JLab. measured provide first opportunity to extract parton distribution function $e(x)$, which provides information about interaction between gluons and quarks, collinear framework that offers...
We measured the g_{1} spin structure function of deuteron at low Q^{2}, where QCD can be approximated with chiral perturbation theory (χPT). The data cover resonance region, up to an invariant mass W≈1.9 GeV. generalized Gerasimov-Drell-Hearn sum, moment Γ_{1}^{d} and polarizability γ_{0}^{d} are precisely determined down a minimum Q^{2} 0.02 GeV^{2} for first time, about 2.5 times lower than that previous data. compare them several χPT calculations models. These results in program benchmark...