A5029983495- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Therapy and Dosimetry
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Radiation Effects in Electronics
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Nuclear physics research studies
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Noncommutative and Quantum Gravity Theories
- Medical Imaging Techniques and Applications
- Cosmology and Gravitation Theories
- Ion-surface interactions and analysis
- Boron Compounds in Chemistry
- Graphite, nuclear technology, radiation studies
- Distributed and Parallel Computing Systems
- Air Quality Monitoring and Forecasting
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
2024
National Agency for New Technologies, Energy and Sustainable Economic Development
2015-2024
Istituto Nazionale di Fisica Nucleare
2023-2024
Instituto de Física Corpuscular
2024
University of Pavia
2024
Universitat de València
2024
European Organization for Nuclear Research
2023-2024
Agostino Gemelli University Polyclinic
2024
Università Cattolica del Sacro Cuore
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2013-2023
The R2E project at CERN has tested a few commercial SRAMs and custom-designed SRAM, whose data are complementary to various scientific publications. experimental include low- high-energy protons, heavy ions, thermal, intermediate- neutrons, electrons pions.
We have measured the cross section of radiative process e+e- -> pi+pi-gamma with KLOE detector at Frascati phi-factory DAPHNE, from events taken a CM energy W=1 GeV. Initial state radiation allows us to obtain for pi+pi-, pion form factor |F_pi|^2 and dipion contribution muon magnetic moment anomaly, Delta a_mu^{pipi} = (478.5+-2.0_{stat}+-5.0_{syst}+-4.5_{th}) x 10^{-10} in range 0.1 < M_{pipi}^2 0.85 GeV^2, where theoretical error includes SU(3) ChPT estimate uncertainty on photon final...
The existence of a light dark force mediator has been tested with the KLOE detector at DAPHNE. This particle, called U, is searched for using decay chain phi-->etaU, eta-->pi+pi-pi0, U-->e+e-. No evidence found in 1.5 fb-1 data. resulting exclusion plot covers mass range 5
The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations. We searched for light vector mediator this dark force, $\mathrm{U}$ boson, with KLOE detector at DA$\Phi$NE $\mathrm{e}^{+}\mathrm{e}^{-}$ collider. Using an integrated luminosity 1.54 fb$^{-1}$, we studied process $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}\gamma$, $\mathrm{U} \mathrm{e}^{+}\mathrm{e}^{-}$, using...
We have searched for a light vector boson U, the possible carrier of "dark force", with KLOE detector at DAΦNE e+e− collider, motivated by astrophysical evidence presence dark matter in Universe. Using collisions collected an integrated luminosity 239.3 pb−1, we look dimuon mass peak reaction e+e−→μ+μ−γ, corresponding to decay U→μ+μ−. find no U signal. set 90% CL upper limit mixing parameter squared between photon and 1.6×10−5 8.6×10−7 region 520<mU<980 MeV.
The recent interest in a light gauge boson the framework of an extra U(1) symmetry motivates searches mass range below 1 GeV. We present search for such particle, dark photon, e+e−→Uγ, U→π+π− based on 28 million e+e−→π+π−γ events collected at DAΦNE by KLOE experiment. π+ π− production initial-state radiation compensates loss sensitivity previous U→e+e−, μ+μ− due to small branching ratios ρ–ω resonance region. found no evidence signal and set limit 90% CL mixing strength between photon ε2, U...
We present a search for the direct production of light pseudoscalar decaying into two photons with Belle II detector at SuperKEKB collider. process e^{+}e^{-}→γa, a→γγ in mass range 0.2<m_{a}<9.7 GeV/c^{2} using data corresponding to an integrated luminosity (445±3) pb^{-1}. Light pseudoscalars interacting predominantly standard model gauge bosons (so-called axionlike particles or ALPs) are frequently postulated extensions model. find no evidence ALPs and set 95% confidence level upper...
Neutral kaon pairs produced in phi decays anti-symmetric entangled state can be exploited to search for violation of CPT symmetry and Lorentz invariance. We present an analysis the CP-violating process phi->K_S K_L->pi+pi-pi+pi- based on 1.7 fb-1 data collected by KLOE experiment at Frascati phi-factory DAFNE. The are used perform a measurement CPT-violating parameters Delta_amu neutral kaons contest Standard Model Extension framework. measured reference frame fixed stars are: Delta_ao =...
A bstract The three precision measurements of the cross section σ ( e + − → π γ(γ)) using initial state radiation by KLOE collaboration provide an important input for prediction hadronic contribution to anomalous magnetic moment muon. These are correlated both statistical and systematic uncertainties and, therefore, simultaneous use these requires covariance matrices that fully describe correlations. We present construction them determine a combined measurement γ(γ)). find, from this...
A search for the flavor-changing neutral-current decay B^{+}→K^{+}νν[over ¯] is performed at Belle II experiment SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb^{-1} collected ϒ(4S) resonance and a 9 60 MeV below resonance. Because measurable signature involves only single charged kaon, novel measurement approach used that exploits not properties decay, but also inclusive other B meson in ϒ(4S)→BB[over event, suppress...
RADNEXT is an EU-funded network of irradiation facilities and radiation effects experts aimed at increasing the quantity quality user access to accelerator infrastructure, improving diversity harmonization across facilities. Along with beam provision worldwide users, has ambitious research program oriented testing, which example a heavy ion facility inter-comparison very different energy regimes included in this work. In particular, deposition distributions silicon solid-state detector...
The radiation used in hadrontherapy treatments interacts with the patient body producing secondary particles, either neutral or charged, that can be for dose and Bragg peak monitoring to provide a fast feedback on treatment plans. Recent results obtained from authors simplified setups (mono-energetic primary beams interacting homogeneous tissue-like target) have already indicated correlation exists between flux of these secondaries coming target (e.g. protons photons) position beam peak. In...
The background induced by the high penetration power of radiation is main limiting factor current radio-guided surgery (RGS). To partially mitigate it, a RGS with β(+)-emitting radio-tracers has been suggested in literature. Here we propose use β(-)-emitting and β(-) probes discuss advantage this method respect to previously explored ones: electron low allows for simple versatile could extend tumours which originating from nearby healthy tissue makes less effective. We developed probe...
Theories beyond the standard model often predict existence of an additional neutral boson, $Z^{\prime}$. Using data collected by Belle II experiment during 2018 at SuperKEKB collider, we perform first searches for invisible decay a $Z^{\prime}$ in process $e^+ e^- \to \mu^+ \mu^- Z^{\prime}$ and lepton-flavor-violating e^{\pm} \mu^{\mp} Z^{\prime}$. We do not find any excess events set 90\% credibility level upper limits on cross sections these processes. translate former, framework...
We have studied the phi->a_0(980) gamma process with KLOE detector at Frascati phi-factory DAPhNE by detecting phi->eta pi^0 decays in final states eta->gamma and eta->pi^+ pi^- pi^0. measured branching ratios for both states: Br(phi->eta gamma)=(7.01 +/- 0.10 0.20)x10^-5 (7.12 0.13 0.22)x10^-5 respectively. also extracted a_0(980) mass its couplings to eta pi^0, K^+ K^-, phi meson from fit of invariant distributions using different phenomenological models.
Organic scintillators are often chosen as radiation detectors for their fast decay time and low Z, while inorganic ones used when high light yields required. In this paper we show that a para-terphenyl based detector has blend of properties the two categories can be optimal energy position measurements low-energy charged particles. Using 0.1% diphenylbutadiene doped samples measured attenuation length λ = 4.73 ±0.06 mm, quenching factor α particles Q <sub...
Using 1.6 fb−1 of e + − → ϕ ηγ data collected with the KLOE detector at DAΦNE, Dalitz plot distribution for η π 0 decay is studied world's largest sample ∼ 4.7 · 106 events. The density parametrized as a polynomial expansion up to cubic terms in normalized dimensionless variables X and Y . experiment sensitive all charge conjugation conserving expansion, including gX 2 term. statistical uncertainty parameters improved by factor two respect earlier measurements.