L. Cotrozzi
A5102876659- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Computational Physics and Python Applications
- Neutrino Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Astrophysics and Cosmic Phenomena
- GNSS positioning and interference
- Radio Astronomy Observations and Technology
- Scientific Research and Discoveries
University of Liverpool
2024-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2020-2024
University of Pisa
2020-2024
We present the first results of Fermilab Muon g-2 Experiment for positive muon magnetic anomaly $a_\mu \equiv (g_\mu-2)/2$. The is determined from precision measurements two angular frequencies. Intensity variation high-energy positrons decays directly encodes difference frequency $\omega_a$ between spin-precession and cyclotron frequencies polarized muons in a storage ring. ring field measured using nuclear resonance probes calibrated terms equivalent proton spin precession...
We present a new measurement of the positive muon magnetic anomaly, a_{μ}≡(g_{μ}-2)/2, from Fermilab Muon g-2 Experiment using data collected in 2019 and 2020. have analyzed more than 4 times number positrons decay our previous result 2018 data. The systematic error is reduced by factor 2 due to better running conditions, stable beam, improved knowledge field weighted distribution, ω[over ˜]_{p}^{'}, anomalous precession frequency corrected for beam dynamics effects, ω_{a}. From ratio...
The Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency $ω_a$ to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run 2018. When combined a precision measurement magnetic field experiment's ring, determines anomaly $a_μ({\rm FNAL}) = 116\,592\,040(54) \times 10^{-11}$ (0.46 ppm). This article describes...
The Fermi National Accelerator Laboratory has measured the anomalous precession frequency $a^{}_\mu = (g^{}_\mu-2)/2$ of muon to a combined precision 0.46 parts per million with data collected during its first physics run in 2018. This paper documents measurement magnetic field storage ring. is monitored by nuclear resonance systems and calibrated terms equivalent proton spin spherical water sample at 34.7$^\circ$C. weighted distribution resulting $\tilde{\omega}'^{}_p$, denominator ratio...
We present details on a new measurement of the muon magnetic anomaly, $a_\mu = (g_\mu -2)/2$. The result is based positive data taken at Fermilab's Muon Campus during 2019 and 2020 accelerator runs. uses $3.1$ GeV$/c$ polarized muons stored in $7.1$-m-radius storage ring with $1.45$ T uniform field. value $ a_{\mu}$ determined from measured difference between spin precession frequency its cyclotron frequency. This normalized to strength field, using Nuclear Magnetic Resonance (NMR). ratio...
We present a new measurement of the positive muon magnetic anomaly, $a_\mu \equiv (g_\mu - 2)/2$, from Fermilab Muon $g\!-\!2$ Experiment using data collected in 2019 and 2020. have analyzed more than 4 times number positrons decay our previous result 2018 data. The systematic error is reduced by factor 2 due to better running conditions, stable beam, improved knowledge field weighted distribution, $\tilde{\omega}'^{}_p$, anomalous precession frequency corrected for beam dynamics effects,...
The Muon $g-2$ Experiment at Fermilab aims to measure the muon magnetic moment anomaly, $a_{\mu} = (g-2)/2$, with a final accuracy of 0.14 parts per million (ppm). A $3.1$-GeV beam is injected into storage ring $14\,$m diameter, in presence $1.45\,$T field. anomaly $a_\mu$ can be extracted by accurately measuring anomalous spin precession frequency $\omega_a$, based on arrival time distribution decay positrons observed $24$ calorimeters, and In 2023, experiment published its second result...
This paper presents the beam dynamics systematic corrections and their uncertainties for Run-1 data set of Fermilab Muon g-2 Experiment. Two to measured muon precession frequency $\omega_a^m$ are associated with well-known effects owing use electrostatic quadrupole (ESQ) vertical focusing in storage ring. An average vertically oriented motional magnetic field is felt by relativistic muons passing transversely through radial electric components created ESQ system. The correction depends on...
Developed within the European Project STRONG2020, PrecisionSM is an annotated database that compiles available data on low-energy hadronic cross sections in electron-positron collisions. It important to collect and organize these experimental measurements since they are used perform precise tests of Standard Model, such as anomalous magnetic moment muon. In addition datasets, also contains details regarding systematic uncertainties treatment Radiative Corrections. The accessible through a...
We present the results of Phase I an ongoing review Monte Carlo tools relevant for low-energy hadronic cross sections. This includes a detailed comparison codes electron-positron scattering into muon pair, pion and electron scan radiative-return experiments. After discussing various approaches that are used effects included, we show differential sections obtained with AfkQed, BabaYaga@NLO, KKMC, MCGPJ, McMule, Phokhara, Sherpa, scenarios inspired by experiments providing input dispersive...
Abstract For over 15 years, the “Radiative Corrections and Monte Carlo Generators for Low Energies” Working Group (Radio MonteCarLow WG) has been providing valuable support to development of radiative corrections generators low energy positron-electron data tau-lepton decays. The Radio WG held 20 meetings in which theorists experimentalists, experts working field physics partly also from tau community, produced higlhy-cited report “Quest precision hadronic cross sections at energy: tools vs....
In high energy physics experiments, calorimeters are calibrated to produce precise and accurate results. Laser light can be used for calibration when the detectors sensitive photons in that particular range, which is often case. Moreover, it not unusual detection systems consist of hundreds channels have independently, stringent requirements on distribution system terms temporal spatial stability, timing. Furthermore, economic factor ease production taken into account. We present a prototype...
The muon anomaly, $a_\mu=(g_{\mu}-2)/2$, is a low-energy observable which can be both measured and computed to high precision, making it sensitive test of the Standard Model (SM) probe for new physics. current discrepancy between experimental value calculation from Muon $g-2$ Theory Initiative $a_{\mu}^{exp}-a_{\mu}^{SM}=(251\pm59)\cdot10^{-11}$, with significance $4.2\,\sigma$. Fermilab E989 experiment aims, full statistical power, improve by factor four precision measurement. In April 2021...