G. Mandaglio
A5060540820- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Cold Fusion and Nuclear Reactions
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Paranormal Experiences and Beliefs
- Particle Accelerators and Free-Electron Lasers
- Radiation Therapy and Dosimetry
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Noncommutative and Quantum Gravity Theories
- Scientific Computing and Data Management
- Statistical Methods and Bayesian Inference
- Historical, Religious, and Philosophical Studies
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2016-2025
University of Messina
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2020-2024
A. Alikhanyan National Laboratory
2019-2024
University of Salerno
2022-2024
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari
2024
Polytechnic University of Bari
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2022-2023
Enrico Fermi Center for Study and Research
2016-2021
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...
The fusion and evaporation residue cross sections for the ${}^{50}$Ti${+}^{249}$Cf ${}^{54}$Cr${+}^{248}$Cm reactions calculated by combined dinuclear system advanced statistical models are compared. These considered to be used synthesize heaviest superheavy element. reaction is more mass asymmetric than ${}^{54}$Cr${+}^{248}$Cm, excitation function former higher one latter reaction. functions in comparison with use of values nuclei framework macroscopic-microscopic model Warsaw Group...
The yields of evaporation residues, fusion-fission, and quasifission fragments in the $^{48}\mathrm{Ca}+^{144,154}\mathrm{Sm}$ $^{16}\mathrm{O}+^{186}\mathrm{W}$ reactions are analyzed framework combined theoretical method based on dinuclear system concept advanced statistical model. measured residues for $^{48}\mathrm{Ca}+^{154}\mathrm{Sm}$ reaction can be well reproduced. fission decomposed into contributions coming from quasifission, fast-fission. decrease yield at large collision...
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...
We report the measurement of K− absorption processes in Σ0p final state and first exclusive two nucleon (2NA) with KLOE detector. The 2NA process without further interactions is found to be 9% sum all other contributing processes, including on three more nucleons or followed by residual nucleons. also determine possible contribution ppK− bound state. yield ppK−/Kstop− (0.044±0.009stat−0.005+0.004syst)⋅10−2 but its statistical significance based an F-test only 1σ.
The study of the $^{48}$Ca+$^{249,250,251,252}$Cf reactions in a wide energy interval around external barrier has been achieved with aim investigating dynamical effects entrance channel via $^{48}$Ca induced on $^{249-252}$Cf targets and to analyze influence odd even neutron composition target capture, quasifission fusion cross sections. Moreover, we also present results individual evaporation residue excitation functions obtained from de-excitation cascade various even-odd even-even...
The possibility of anisotropies in the speed light relative to limiting electrons is considered. absence sidereal variations energy Compton-edge photons at European Synchrotron Radiation Facility's GRAAL facility constrains such representing first nonthreshold collision-kinematics study Lorentz violation. When interpreted within minimal standard-model extension, this result yields two-sided limit 1.6×10−14 95% confidence level on a combination parity-violating photon and electron...
The angular distributions of fission fragments for the $^{32}\mathrm{S}+^{184}\mathrm{W}$ reaction at center-of-mass energies 118.8, 123.1, 127.3, 131.5, 135.8, 141.1, and 144.4 MeV are measured. experimental excitation function is obtained. anisotropy (${\mathcal{A}}_{\mathrm{exp}}$) found by extrapolating each fragment distribution. measured cross sections $^{32}\mathrm{S}+^{182,184}\mathrm{W}$ decomposed into fusion-fission, quasifission, fast-fission contributions dinuclear system model...
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.
We searched for the $μ^+μ^-$ decay of a light vector gauge boson, also known as dark photon, in $e^+ e^- \to μ^+ μ^- γ_{\rm ISR}$ process by means Initial State Radiation (ISR) method. used 1.93~fb$^{-1}$ data collected KLOE experiment at DA$Φ$NE $ϕ$-factory. No structures have been observed over irreducible $μ^+ μ^-$ background. A 90\% CL limit on ratio $\varepsilon^2=α^{\prime}/α$ between coupling constant and fine structure $ 3\times 10^{-6}-2\times 10^{-7}$ has set photon mass region 519...
The dynamical effects of the entrance channel on formation evaporation residues are studied by analyzing $^{40}\mathrm{Ar}+^{176}\mathrm{Hf}$, $^{86}\mathrm{Kr}+^{130,136}\mathrm{Xe}$, $^{124}\mathrm{Sn}+^{92}\mathrm{Zr}$, and $^{48}\mathrm{Ca}+^{174}\mathrm{Yb}$ reactions leading to $^{216}\mathrm{Th}{}^{*}$ $^{222}\mathrm{Th}{}^{*}$ compound nuclei. We find that difference between residue cross sections for same nucleus is caused different angular momentum distributions partial fusion...
A measurement of the vector to pseudoscalar conversion decay $\phi \to \pi^0 e^+e^-$ with KLOE experiment is presented. sample $\sim 9500$ signal events was selected from a data set 1.7 fb$^{-1}$ $e^+e^-$ collisions at $\sqrt{s} \sim m_{\phi}$ collected DA$\Phi$NE collider. These were used obtain first transition form factor $| F_{\phi \pi^0}(q^2) |$ and new branching ratio decay: $\rm{BR}\,(\phi e^+e^-) = (\,1.35 \pm 0.05^{\,\,+0.05}_{\,\,-0.10}\,) \times 10 ^{-5}$. The result improves...
We have studied the vector to pseudoscalar conversion decay ϕ→ηe+e−, with η→π0π0π0, KLOE detector at DAΦNE. The data set of 1.7 fb−1 e+e− collisions s∼Mϕ contains a clear signal ∼31,000 events from which we measured value BR(ϕ→ηe+e−)=(1.075±0.007±0.038)×10−4. same sample is used determine transition form factor by fit invariant mass spectrum, obtaining bϕη=(1.28±0.10−0.08+0.09) GeV−2, that improves five precision previous measurement and in good agreement VMD expectations.
The evaporation residue yields from the compound nuclei $^{220}\mathrm{Th}$ formed in $^{16}\mathrm{O}+^{204}\mathrm{Pb}, ^{40}\mathrm{Ar}+^{180}\mathrm{Hf}, ^{82}\mathrm{Se}+^{138}\mathrm{Ba}$, and $^{124}\mathrm{Sn}+^{96}\mathrm{Zr}$ reactions are analyzed to study entrance channel effects by comparison of capture, fusion, cross sections calculated combined dinuclear system (DNS) advanced statistical models. difference between (ER) can be related stages nucleus formation and/or its...