P. Finocchiaro
A5040085478- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Organophosphorus compounds synthesis
- Neutrino Physics Research
- Particle accelerators and beam dynamics
- Advanced Optical Sensing Technologies
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Molecular spectroscopy and chirality
- Radiation Therapy and Dosimetry
- Inorganic and Organometallic Chemistry
- Advanced NMR Techniques and Applications
- Medical Imaging Techniques and Applications
- Phosphorus compounds and reactions
- Atomic and Subatomic Physics Research
- Astronomical and nuclear sciences
- Molecular Sensors and Ion Detection
- Supramolecular Chemistry and Complexes
- Analytical Chemistry and Chromatography
- Nuclear Materials and Properties
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2015-2024
Istituto Nazionale di Fisica Nucleare
2015-2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2024
Instituto de Física Corpuscular
2024
Universitat de València
2024
Campbell Collaboration
2015-2023
University of Pavia
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
1989-2023
Instituto Superior Técnico
2017-2023
University of York
2021
We present phase space distributions and multiplicities of K+, K−, ϕ mesons produced in Ar+KCl reactions at a kinetic beam energy 1.756 GeV/nucleon measured with the HADES spectrometer. The inverse slope parameters yields kaons supplement systematics previous measurements. percentage K− coming from decay is found to be 18±7%.6 MoreReceived 9 March 2009DOI:https://doi.org/10.1103/PhysRevC.80.025209©2009 American Physical Society
We present transverse momentum spectra, rapidity distribution and multiplicity of $ \Lambda$ -hyperons measured with the HADES spectrometer in reaction Ar(1.76AGeV) + KCl . The yield \Xi^{{-}}_{}$ is calculated from our previously reported /( \Sigma^{{0}}_{}$ ) ratio compared to other strange particle multiplicities. Employing a strangeness balance equation multiplicities yet unmeasured \Sigma^{{\pm}}_{}$ can be estimated. Finally statistical hadronization model used fit yields \pi^{-}_{}$ ,...
We report first results on a deep subthreshold production of the doubly strange hyperon Xi;{-} in heavy-ion reaction. At beam energy 1.76A GeV reaction Ar + KCl was studied with High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Lambda sample collected, allowing for investigation decay channel --> Lambdapi;{-}. The deduced Xi;{-}/(Lambda Sigma;{0}) ratio (5.6 +/- 1.2_{-1.7};{+1.8}) x 10;{-3} is significantly larger than available model predictions.
We present a search for the e+e− decay of hypothetical dark photon, also named U vector boson, in inclusive dielectron spectra measured by HADES p(3.5 GeV) + p, Nb reactions, as well Ar (1.756 GeV/u) KCl reaction. An upper limit on kinetic mixing parameter squared ϵ2 at 90% CL has been obtained mass range MU=0.02–0.55 GeV/c2 and is compared with world data set. For masses 0.03–0.1 GeV/c2, lowered respect to previous results, allowing now exclude large part region favored muon g−2 anomaly....
The energy-dependent cross section of the ^{7}Be(n,α)^{4}He reaction, interest for so-called cosmological lithium problem in big bang nucleosynthesis, has been measured first time from 10 meV to keV neutron energy. challenges posed by short half-life ^{7}Be and low reaction have overcome at n_TOF thanks an unprecedented combination extremely high luminosity good resolution beam new experimental area (EAR2) facility CERN, availability a sufficient amount chemically pure ^{7}Be, specifically...
At the neutron time-of-flight facility n_TOF at CERN a new vertical beam line was constructed in 2014, order to extend experimental possibilities this an even wider range of challenging cross-section measurements interest astrophysics, nuclear technology and medical physics. The design hall based on FLUKA Monte Carlo simulations, aiming maximizing flux, reducing halo minimizing background from neutrons interacting with collimator or back-scattered dump. present paper gives overview relevant...
Employing the Bonn–Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of reaction p(3.5GeV)+p→pK+Λ. This might contain information about kaonic cluster "ppK−" (with quantum numbers JP=0− and total isospin I=1/2) via its decay into pΛ. Due to interference effects in our coherent description data, a hypothetical K‾NN (or, specifically "ppK−") signal need not necessarily show up as pronounced feature (e.g. peak) an invariant mass spectrum like Our PWA includes variety...
The invariant-mass spectrum of $e^+ e^-$ pairs produced in $^{12}$C+$^{12}$C collisions at an incident energy 2 GeV per nucleon has been measured for the first time. pair production probabilities span over five orders magnitude from $\pi^0$-Dalitz to $\rho/\omega$ region. Dalitz decays $\pi^0$ and $\eta$ account all yield up 0.15 GeV/c$^2$, but only about 50% above this mass. A comparison with model calculations shows that excess is likely due baryon-resonance vector-meson decays. Transport...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConformational analysis of triarylboranesJohn F. Blount, Paolo. Finocchiaro, Devens. Gust, and Kurt. MislowCite this: J. Am. Chem. Soc. 1973, 95, 21, 7019–7029Publication Date (Print):October 1, 1973Publication History Published online1 May 2002Published inissue 1 October 1973https://pubs.acs.org/doi/10.1021/ja00802a024https://doi.org/10.1021/ja00802a024research-articleACS PublicationsRequest reuse permissionsArticle...
The synthesis, characterization, optical, and fluorescent properties of an amphiphilic Schiff-base bis(salicylaldiminato)zinc(II) complex are reported. Detailed (1)H nuclear magnetic resonance (NMR), diffusion-ordered spectroscopy (DOSY) NMR, optical absorption, fluorescence studies indicate the existence aggregate species in noncoordinating solvents. degree type aggregation related to concentration polarity solvent. Dilute solutions likely characterized by presence defined dimers, whereas...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction of tosylamide monosodium salt with bis(halomethyl) compounds: an easy entry to symmetrical N-tosyl aza macrocyclesFrancesco Bottino, Michele Di Grazia, Paolo Finocchiaro, Frank R. Fronczek, Antonino Mamo, and Sebastiano PappalardoCite this: J. Org. Chem. 1988, 53, 15, 3521–3529Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July...
The synthesis, characterization, (1)H NMR, optical absorption and fluorescent properties of a series amphiphilic Schiff-base bis(salicylaldiminato)zinc(II) complexes are reported. Detailed DOSY fluorescence spectroscopy studies indicate the existence aggregate species in solutions non-coordinating solvents. degree aggregation is related to nature bridging diamine. Chloroform where diamine contains naphthalene or pyridine nucleus always characterized by presence defined dimer aggregates,...
We present the transverse momentum spectra and rapidity distributions of ${\ensuremath{\pi}}^{\ensuremath{-}}$ ${\mathrm{K}}_{S}^{0}$ in Ar $+$ KCl reactions at a beam kinetic energy $1.756$ $A$ GeV measured with High Acceptance Di-Electron Spectrometer (HADES). The reconstructed sample is characterized by good event statistics for wide range rapidity. compare experimental to predictions Isospin Quantum Molecular Dynamics (IQMD) model. model calculations show that low momenta constitute...
We report measurements of electron pair production in elementary p+p and d+p reactions at 1.25 GeV/u with the HADES spectrometer. For first time, pairs were reconstructed for n+p by detecting proton spectator from deuteron breakup. find that yield invariant mass Me+e- > 0.15 GeV/c2 is about an order magnitude larger as compared to p+p. A comparison model calculations demonstrates mechanism not sufficiently described yet. The spectra measured C+C are compatible a superposition collisions,...
We present results on dielectron production in ${}^{40}\mathrm{Ar}+\mathrm{KCl}$ collisions at 1.76$A$ GeV. For the first time $\ensuremath{\omega}$ mesons could be reconstructed a heavy-ion reaction bombarding energy which is well below threshold free nucleon-nucleon collisions. The multiplicity has been extracted and compared to yields of other particles, particular $\ensuremath{\varphi}$ meson. At intermediate ${e}^{+}{e}^{\ensuremath{-}}$ invariant masses, we find strong enhancement pair...
We present an analysis of the Lambda(1405) resonance produced in reaction p+p->Sigma^{pm}+pi^{mp}+K+p at 3.5 GeV kinetic beam energy measured with HADES GSI. The two charged decay channels -> Sigma^{\pm}+pi^{\mp} have been reconstructed for first time p+p collisions. efficiency and acceptance-corrected spectral shapes show a peak position clearly below 1400 MeV/c^2. find total production cross section sigma_{Lambda(1405)}=9.2 +- 0.9 0.7 +3.3-1.0 mub. its polar angle distribution suggests...
We report on the measurement of ^{7}Be(n,p)^{7}Li cross section from thermal to approximately 325 keV neutron energy, performed in high-flux experimental area (EAR2) n_TOF facility at CERN. This reaction plays a key role lithium yield big bang nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements this did not cover energy window interest BBN, and they showed large discrepancy between each other. was with Si telescope high-purity sample produced by...
Background: Charge-exchange (CE) reactions offer a major opportunity to excite nuclear isovector modes, providing important clues about the interaction in medium. Moreover, double charge-exchange are proving be tempting tool access transition matrix elements (NMEs) related beta-decay processes. The latter also of crucial importance extract neutrino properties from half-life hypothetical neutrinoless beta decay and search for physics beyond standard model.Purpose: Through multichannel...
Background: Single-charge-exchange reactions are appropriate tools to study the nuclear response one-particle/one-hole isospin probes, gaining additional interest from connection beta decay. This analogy has been recently extended second order, connecting double-charge-exchange and double decays. Nowadays, availability of powerful experimental setups advanced theories models allows one access precious information on key structure aspects embedded in widely sought neutrinoless decay.Purpose:...
Background: In recent years, the NUMEN project has highlighted that systematic study of double charge exchange (DCE) nuclear reactions could provide precious information on matrix elements neutrinoless $\ensuremath{\beta}$ decay. To achieve this goal, a multichannel approach was adopted, where plethora different reaction channels is measured under same experimental conditions and analyzed in coherent framework. context, initial (ISI) final (FSI) state interactions are fundamental building...
Background: A systematic exploration of one-nucleon transfer reactions induced by the ($^{18}\mathrm{O},^{19}\mathrm{F}$) and ($^{18}\mathrm{O},^{17}\mathrm{O}$) on different targets ($^{12}\mathrm{C}, ^{16}\mathrm{O}, ^{27}\mathrm{Al}, ^{40}\mathrm{Ca}, ^{48}\mathrm{Ti}, ^{76}\mathrm{Se}, ^{116}\mathrm{Sn}$) is being performed at Istituto Nazionale di Fisica Nucleare--Laboratori Nazionali del Sud (INFN-LNS) beam energies higher than Coulomb barrier. featured aspect adoption a multichannel...