C. Broggini
A5057636036- Nuclear physics research studies
- Nuclear Physics and Applications
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- Atomic and Molecular Physics
- High-Energy Particle Collisions Research
- Astro and Planetary Science
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Radioactivity and Radon Measurements
- Gamma-ray bursts and supernovae
- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Superconducting Materials and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Radioactive Decay and Measurement Techniques
- Nuclear reactor physics and engineering
- Stellar, planetary, and galactic studies
- Radiation Therapy and Dosimetry
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2016-2025
Istituto Nazionale di Fisica Nucleare
2002-2019
University of Padua
1995-2018
Institute for Physics
2007-2014
University of Pavia
2006
University of Neuchâtel
1990-2002
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
1998
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
1989-1996
University of Milan
1996
University of Ferrara
1996
Experimental results obtained at the CERN Super Proton Synchrotron on structure-function ratio F2n/F2p in kinematic range 0.004<x<0.8 and 0.4<Q2<190 GeV2, together with structure function F2d determined from a fit to published data, are used derive difference F2p(x)-F2n(x). The value of Gottfried sum F(F2p-F2n)dx/x=0.240±0.016 is below quark-parton-model expectation 1/3.Received 23 January 1991DOI:https://doi.org/10.1103/PhysRevLett.66.2712©1991 American Physical Society
The muon-proton and muon-deuteron inclusive deep inelastic scattering cross sections were measured in the kinematic range 0.002 < × 0.60 0.5 Q2 75 GeV2 at incident muon energies of 90, 120, 200 280 GeV. These results are based on full data set collected by New Muon Collaboration, including taken with a small angle trigger. extracted values structure functions F2p F2d good agreement those from other experiments. cover sufficient y to allow determination ratio longitudinally transversely...
We present a new determination of the nonsinglet structure function Fp2 - Fn2 at Q2=4 GeV2 using recently measured values Fd2 and Fn2/Fp2. A evaluation Gottfried sum is given, which remains below simple quark-parton model value 1/3.Received 1 March 1994DOI:https://doi.org/10.1103/PhysRevD.50.R1©1994 American Physical Society
We report on a new measurement of the 14N(p,γ)15O capture cross section at Ep=140 to 400 keV using kV LUNA accelerator facility Laboratori Nazionali del Gran Sasso (LNGS). The uncertainties have been reduced with respect previous measurements and their analysis. analyzed data R-matrix method we find that ground state transition accounts for about 15% total S-factor. main contribution S-factor is given by 6.79 MeV state. S(0)=1.7±0.2 b, in agreement recent extrapolations. result has important...
The fully contained events detected in the NUSEX nucleon stability experiment have been analysed to search for possible anomalies fluxes of atmospheric neutrinos. measured flux muon neutrinos is very good agreement with predictions and no anomaly has found ratio between rate electron neutrino events.
In this paper, we discuss the main theoretical aspects and experimental effects of neutrino electromagnetic properties. We start with a general description form factors Dirac Majorana neutrinos. Then, theory phenomenology magnetic electric dipole moments, summarizing results predictions. also charge radius radiative decay. Finally, describe spin spin-flavor precession in transverse field summarize its phenomenological applications.
Recent observations of (6)Li in metal poor stars suggest a large production this isotope during big bang nucleosynthesis (BBN). In standard BBN calculations, the (2)H(α,γ)(6)Li reaction dominates production. This has never been measured inside energy region because its cross section drops exponentially at low and electric dipole transition is strongly suppressed for isoscalar particles (2)H α energies below Coulomb barrier. Indirect measurements using dissociation only give upper limits...
We give the LUNA results on cross section measurement of a key reaction proton-proton chain strongly affecting calculated neutrino luminosity from Sun: He3+He3-->He4+2p. Due to cosmic ray suppression provided by Gran Sasso underground laboratory it has been possible measure down lower edge solar Gamow peak, i.e. as low 16.5 keV centre mass energy. The data clearly show increase due electron screening effect but they do not exhibit any evidence for narrow resonance suggested explain observed flux.
The transition between the Main Sequence and Red Giant Branch in low mass stars is powered by onset of CNO burning, whose bottleneck 14N(p, O. LUNA collaboration has recently improved energy measurements cross section this key reaction. We analyse impact revised reaction rate on estimate Globular Cluster ages, as derived from turnoff luminosity. found that age oldest Clusters should be increased about 0.7-1 Gyr with respect to current estimates.
Results are presented for F2d/F2p and Rd − Rp from simultaneous measurements of deep inelastic muon scattering on hydrogen deuterium targets, at 90, 120, 200 280 GeV. The difference Rp, determined in the range 0.002 < x 0.4 an average Q2 5 GeV2, is compatible with zero. dependence was measured kinematic 0.001 0.8 0.1 145 GeV2 small statistical systematic errors. For > ratio decreases Q2.
The nuclear physics input from the He3(α,γ)Be7 cross section is a major uncertainty in fluxes of Be7 and B8 neutrinos Sun predicted by solar models Li7 abundance obtained big-bang nucleosynthesis calculations. present work reports on new precision experiment using activation technique at energies directly relevant to nucleosynthesis. Previously such low had been reached experimentally only prompt-γ with inferior precision. Using windowless gas target, high beam intensity, background...
Solar neutrino fluxes depend both on astrophysical and nuclear physics inputs, namely the cross sections of reactions responsible for production inside core. While flux solar $^{8}\mathrm{B}$ neutrinos has been recently measured at Superkamiokande with a 3.5% uncertainty precise measurement $^{7}\mathrm{Be}$ is foreseen in next future, predicted are still affected by larger errors. The largest to determine comes from...
In stars with temperatures above 20×106K, hydrogen burning is dominated by the CNO cycle. Its rate determined slowest process, 14N(p, γ)15O reaction. Deep underground in Italy's Gran Sasso laboratory, at LUNA 400 kV accelerator, cross section of this reaction has been measured energies much lower than ever achieved before. Using a windowless gas target and 4π BGO summing detector, direct data obtained down to 70 keV, reaching value 0.24 picobarn. The Gamow peak covered experimental for...
Nuclear astrophysics strives for a comprehensive picture of the nuclear reactions responsible synthesizing chemical elements and powering stellar evolution engine. Deep underground in Gran Sasso laboratory cross sections key proton-proton chain Carbon-Nitrogen-Oxygen (CNO) cycle have been measured right down to energies astrophysical interest. The salient features are summarized here. main results obtained by LUNA last twenty years reviewed, their influence on comprehension properties...