M. Calicchio
A5004081995- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Quantum Dots Synthesis And Properties
- solar cell performance optimization
- Chalcogenide Semiconductor Thin Films
- Silicon and Solar Cell Technologies
- Semiconductor Quantum Structures and Devices
- Particle accelerators and beam dynamics
- Multiferroics and related materials
- Copper-based nanomaterials and applications
- Semiconductor materials and interfaces
- Magnetic and transport properties of perovskites and related materials
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Nanowire Synthesis and Applications
- Ferroelectric and Piezoelectric Materials
- Computational Physics and Python Applications
- Pulsars and Gravitational Waves Research
- Radio Astronomy Observations and Technology
Ricerca sul Sistema Energetico (Italy)
2023
Institute of Materials for Electronics and Magnetism
2005-2017
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
1998-2013
National Research Council
2013
Universidad de Valladolid
2009-2012
Institute for Scientific Interchange
2012
Instituto Politécnico Nacional
2009-2010
University of Antwerp
2009
Polytechnic University of Bari
2008
University of Bari Aldo Moro
1991-2004
TOTEM has measured the differential cross-section for elastic proton-proton scattering at LHC energy of {\srud}s = 7TeV analysing data from a short run with dedicated large {\beta} * optics. A single exponential fit slope B (20:1{\pm}0:2stat {\pm}0:3syst)GeV-2 describes range four-momentum transfer squared |t| 0.02 to 0.33 GeV2. After extrapolation 0, total (24:8{\pm}0:2stat {\pm}1:2syst) mb was obtained. Applying optical theorem and using luminosity measurement CMS, (98:3{\pm}0:2stat...
At the LHC energy of , under various beam and background conditions, luminosities, Roman Pot positions, TOTEM has measured differential cross-section for proton-proton elastic scattering as a function four-momentum transfer squared t. The results different analyses are in excellent agreement demonstrating no sizeable dependence on conditions. Due to very close approach detectors center (≈5σbeam) dedicated run with β* = 90 m, |t|-values down 5·10−3 GeV2 were reached. exponential slope this...
The TOTEM collaboration has measured the proton-proton total cross section at √s=8 TeV using a luminosity-independent method. In LHC fills with dedicated beam optics, Roman pots have been inserted very close to allowing detection of ~90% nuclear elastic scattering events. Simultaneously inelastic rate by T1 and T2 telescopes. By applying optical theorem, (101.7±2.9) mb determined, well in agreement extrapolation from lower energies. This method also allows one derive sections:...
The TOTEM experiment at the LHC has performed first luminosity-independent determination of total proton-proton cross-section . This technique is based on optical theorem and requires simultaneous measurements inelastic rate – accomplished with forward charged-particle telescopes T1 T2 in range 3.1 < |η| 6.5 elastic by detecting outcoming protons Roman Pot detectors. data presented here were collected a dedicated run 2011 special beam optics (β* = 90 m) Pots approaching close enough to...
We present a measurement of the flux neutrino-induced upgoing muons (<Eν>∼ 100 GeV) using MACRO detector. The ratio number observed to expected events integrated over all zenith angles is 0.74 ±0.036 (stat) ±0.046 (systematic) ±0.13 (theoretical). distribution for −1.0≤cosθ≤−0.1 does not fit well with no oscillation expectation, giving maximum probability χ2 0.1%. acceptance detector has been extensively studied downgoing muons, independent analyses and Monte Carlo simulations. other...
The TOTEM Experiment will measure the total pp cross-section with luminosity-independent method and study elastic diffractive scattering at LHC. To achieve optimum forward coverage for charged particles emitted by collisions in interaction point IP5, two tracking telescopes, T1 T2, be installed on each side pseudorapidity region 3.1 ⩽ |η| 6.5, Roman Pot stations placed distances of ±147 m ±220 from IP5. Being an independent experiment but technically integrated into CMS, first operate...
Proton-proton elastic scattering has been measured by the TOTEM experiment at CERN Large Hadron Collider in dedicated runs with Roman Pot detectors placed as close seven times transverse beam size (σbeam) from outgoing beams. After careful study of accelerator optics and detector alignment, |t|, square four-momentum transferred process, determined an uncertainty . In this letter, first results differential cross-section are presented covering a |t|-range 0.36 to 2.5 GeV2. The range < |t|...
The angular distribution of upward-going muons produced by atmospheric neutrinos in the rock below MACRO detector show anomalies good agreement with two flavor neutrino-mu ==> neutrino-tau oscillations maximum mixing and Delta m**2 around 0.0024 eV**2. Exploiting dependence magnitude matter effect on oscillation channel, using a set 809 observed MACRO, we that neutrino-sterile is disfavored 99% C.L. respect to neutrino-tau.
The vertical underground muon intensity has been measured in the slant depth range 3200–7000 hg cm−2 (standard rock) with completed lower part of MACRO detector at Gran Sasso laboratory, using a large sample data. These observations are used to compute surface flux and primary ''all-nucleon'' spectrum. An analysis systematic uncertainties introduced by interaction models atmosphere propagation muons is presented. A comparison our results published data also presented.Received 3 April...
In this paper the design, construction and performance of lower part first supermodule MACRO detector is described.
The TOTEM experiment at the LHC has measured inelastic proton-proton cross-section in a β* = 90 m run with low pile-up. measurement was based on events least one charged particle T2 telescope acceptance of 5.3 < |η| 6.5 pseudorapidity. Combined data from T1 telescope, covering 3.1 4.7, for ⩽ final-state determined to be (70.5 ± 2.9) mb. This includes all central diffractive which maximally 0.25 mb is estimated escape detection telescopes. Based models mass diffraction, total deduced (73.7...
Using 5.33 × 106 single muons collected in 1.46 104 live hours by MACRO during the period 1991–1994, we have searched for a correlation between variations underground muon rate, Nμ, and seasonal temperature atmosphere. These correlations are found to be present with high statistical significance. Analysis of relatively complete December 1992–December 1994 subset data yields value coefficient, αT = (TNμ)(∂Nμ∂T) 0.83±0.13. total set gives consistent results. We compared this result hypothesis...
The energy of atmospheric neutrinos detected by MACRO was estimated using multiple Coulomb scattering upward throughgoing muons. This analysis allows a test neutrino oscillations, relying on the distortion muon distribution. These results have been combined with those coming from angular distribution only. Both analyses are independent flux normalization and provide strong evidence, above 4σ level, in favour oscillations.
We report on the first measurement of flux upgoing muons resulting from interactions atmospheric neutrinos in rock below MACRO. The ratio observed to expected number events integrated over all nadir angles is 0.73 ± .09stat. .06sys. .12theor.. as a function angle presented and compared Monte Carlo expectations. At 90% confidence level, data are consistent with no neutrino oscillations or some possible oscillation hypothese parameters suggested by Kamiokande contained-event analysis.
Measurements of the exponential attenuation electron currents in a straight line collision chamber are reported using methane gas as scattering medium. From transmission spectra obtained at different pressure chamber, total cross sections for energy range 0–16 eV derived and compared to previous measurements. A small structure region Ramsauer–Townsend minimum is observed, confirming earlier interpretations swarm experiments. possible mechanism excitation discussed.
The TOTEM experiment has measured the charged-particle pseudorapidity density dNch/dη in pp collisions at for 5.3<|η|<6.4 events with least one charged particle transverse momentum above 40 MeV/c this range. This extends analogous measurement performed by other LHC experiments to previously unexplored forward η region. refers more than 99% of non-diffractive processes and single double diffractive masses ∼3.4 GeV/c2, corresponding about 95% total inelastic cross-section. been found decrease...
An approach to low-cost production of Cu(In,Ga)Se2 (CIGS) solar cells based on pulsed electron deposition (PED) has achieved a crucial milestone. Lab-scale with efficiencies exceeding 15% were obtained by depositing CIGS from stoichiometric quaternary target at 270 °C and without any post-growth treatment. effective control the p-doping level in was starting PED layer NaF tailored generate optimum Na diffusion. These results show that is promising technology for development competitive process cells.
Organic electrochemical transistors (OECTs) are currently emerging as powerful tools for biosensing, bioelectronics and nanomedical applications owing to their ability operate under liquid phase conditions optimally integrating electronic biological systems. Herein we disclose the unique potential of OECTs detecting investigating electrical properties insoluble eumelanin biopolymers. Gate current measurements on fine aqueous suspensions a synthetic sample from 5,6-dihydroxyindole (DHI)...
We perform an indirect search for Weakly Interacting Massive Particles (WIMPs) using the MACRO detector to look neutrino-induced upward-going muons resulting from annihilation of WIMPs trapped in Sun and Earth. The is conducted various angular cones centered on Earth accommodate a range WIMP masses. No significant excess over background atmospheric neutrinos seen limits are placed muon fluxes These used constrain neutralino particle parameters supersymmetric theory, including those suggested...
High-energy gamma-ray astronomy is now a well-established field, and several sources have been discovered in the region from few giga-electron volts up to tera-electron volts. If involving hadronic processes exist, production of photons would be accompanied by neutrinos too. Other possible neutrino could related annihilation weakly interacting, massive particles (WIMPs) at center galaxies with black holes. We present results search for pointlike using 1100 upward-going muons produced...