G. Bruni

ORCID: 0000-0001-5667-7748
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Particle Detector Development and Performance
  • Quantum Chromodynamics and Particle Interactions
  • Dark Matter and Cosmic Phenomena
  • Computational Physics and Python Applications
  • Neutrino Physics Research
  • Astrophysics and Cosmic Phenomena
  • Cosmology and Gravitation Theories
  • Radiation Detection and Scintillator Technologies
  • Distributed and Parallel Computing Systems
  • Nuclear Physics and Applications
  • Medical Imaging Techniques and Applications
  • Radiation Therapy and Dosimetry
  • Superconducting Materials and Applications
  • Solar and Space Plasma Dynamics
  • Atomic and Subatomic Physics Research
  • Particle Accelerators and Free-Electron Lasers
  • Muon and positron interactions and applications
  • Radiation Effects in Electronics
  • Advanced Data Storage Technologies
  • Geomagnetism and Paleomagnetism Studies
  • CCD and CMOS Imaging Sensors
  • Black Holes and Theoretical Physics
  • Ionosphere and magnetosphere dynamics

Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2016-2025

Istanbul University
2023-2024

Institute for High Energy Physics
2023-2024

Institute of Science and Technology
2023-2024

Atlas Scientific (United States)
2024

A. Alikhanyan National Laboratory
2024

SR Research (Canada)
2024

Federación Española de Enfermedades Raras
2024

Istituto Nazionale di Fisica Nucleare
2021-2024

The University of Adelaide
2018-2023

A measurement of the cosmic ray positron fraction e+/(e++e−) in energy range 1–30 GeV is presented. The based on data taken by AMS-01 experiment during its 10 day Space Shuttle flight June 1998. proton background suppression order 106 reached identifying converted bremsstrahlung photons emitted from positrons.

10.1016/j.physletb.2007.01.024 article EN cc-by Physics Letters B 2007-02-02

A small electromagnetic sampling calorimeter, installed in the ZEUS experiment 1995, significantly enhanced acceptance for very low x and Q^2 inelastic neutral current scattering, e^{+}p \to e^{+}X, at HERA. measurement of proton structure function F_2 total virtual photon-proton (\gamma^*p) cross-section is presented 0.11 \le Q^{2} 0.65 GeV^2 2 \times 10^{-6} 6 10^{-5}, corresponding to a range \gamma^{*}p c.m. energy 100 W 230 GeV. Comparisons with various models are also presented.

10.1016/s0370-2693(97)00905-2 article EN cc-by-nc-nd Physics Letters B 1997-09-01

The photoproduction reaction gamma p -> mu+ mu- has been studied in ep interactions using the ZEUS detector at HERA. data sample corresponds to an integrated luminosity of 43.2 pb^{-1}. Upsilon meson observed for first time. sum products elastic Upsilon(1S), Upsilon(2S), Upsilon(3S) cross sections with their respective branching ratios is determined be 13.3 +- 6.0(stat.)^{+2.7}_{-2.3}(syst.) pb a mean photon-proton centre mass energy 120 GeV. section above prediction perturbative QCD model.

10.1016/s0370-2693(98)01081-8 article EN cc-by-nc-nd Physics Letters B 1998-10-01

This paper presents measurements of D∗± production in deep inelastic scattering from collisions between 27.5 GeV positrons and 820 protons. The data have been taken with the ZEUS detector at HERA. decay channel D∗+ → (D0 K−π+)π+ (+c.c) has used study. e+p cross section for inclusive 5 < Q2 100 GeV2> y 0.7 is 5.3 ± 1.0 0.8 nb kinematic region 1.3 pT(D∗±) 9.0 |η(D∗±)| 1.5. Differential sections as functions pT(D∗±), η(D∗±), W are compared next-to-leading order QCD calculations based on...

10.1016/s0370-2693(97)00847-2 article EN cc-by-nc-nd Physics Letters B 1997-09-01

We present an analysis of muon events with all multiplicities collected during 21804 h operation the first Large Volume Detector tower. The measured angular distribution intensity has been converted to "depth–vertical-intensity" relation in depth range from 3 12 km w.e. this allowed us derive power index γ primary all-nucleon spectrum: γ=2.78±0.05. standard rock and comparison data other experiments done. also derived vertical spectrum at sea level.Received April...

10.1103/physrevd.58.092005 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1998-10-01

A search for single-top production, ep --> etX, has been made with the ZEUS detector at HERA using an integrated luminosity of 130.1 pb-1. Events from both leptonic and hadronic decay channels W boson resulting top quark were sought. For mode, was events isolated high-energy leptons significant missing transverse momentum. three-jet in which two jets had invariant mass consistent that selected. No evidence production found. The results are used to constrain via flavour-changing neutral...

10.1016/s0370-2693(03)00333-2 article EN cc-by Physics Letters B 2003-04-23

The HERA electron--proton collider has collected 100 pb$^{-1}$ of data since its start-up in 1992, and recently moved into a high-luminosity operation mode, with upgraded detectors, aiming to increase the total integrated luminosity per experiment more than 500 pb$^{-1}$. been machine excellence for study QCD structure proton. Large Hadron Collider (LHC), which will collide protons centre-of-mass energy 14 TeV, be completed at CERN 2007. main mission LHC is discover mechanisms electroweak...

10.48550/arxiv.hep-ph/0601013 preprint EN other-oa arXiv (Cornell University) 2006-01-01

Measurement of the chemical and isotopic composition cosmic rays is essential for precise understanding their propagation in galaxy. While model parameters are mainly determined using B/C ratio, study extended sets ratios can provide stronger constraints on models. In this paper, relative abundances light-nuclei lithium, beryllium, boron, carbon presented. The secondary-to-primary Li/C, Be/C, have been measured kinetic energy range 0.35–45 GeV nucleon−1. ratio 7Li/6Li also magnetic rigidity...

10.1088/0004-637x/724/1/329 article EN The Astrophysical Journal 2010-11-02
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