A. Driutti
A5077754719- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Computational Physics and Python Applications
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Cosmology and Gravitation Theories
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Scientific Research and Discoveries
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Spectroscopy Techniques in Biomedical and Chemical Research
- Superconducting and THz Device Technology
- Semiconductor materials and interfaces
- Hemodynamic Monitoring and Therapy
- thermodynamics and calorimetric analyses
- Nuclear reactor physics and engineering
- Advanced Radiotherapy Techniques
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2022-2024
University of Pisa
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2013-2022
University of Udine
2013-2022
University of Michigan
2022
University of Kentucky
2021
University of Trieste
2009-2021
Istituto Nazionale di Fisica Nucleare
2013-2019
University of Glasgow
2013-2019
Institute for Physics
2019
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...
The mass of the W boson, a mediator weak force between elementary particles, is tightly constrained by symmetries standard model particle physics. Higgs boson was last missing component model. After observation measurement provides stringent test We measure mass, MW, using data corresponding to 8.8 inverse femtobarns integrated luminosity collected in proton-antiproton collisions at 1.96 tera-electron volt center-of-mass energy with CDF II detector Fermilab Tevatron collider. A sample...
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...
We present new measurements of the inclusive forward-backward ttbar production asymmetry, AFB, and its dependence on several properties system. The are performed with full Tevatron data set recorded CDF II detector during ppbar collisions at sqrt(s) = 1.96 TeV, corresponding to an integrated luminosity 9.4 fb^(-1). measure asymmetry using rapidity difference Delta-y=y_(t)-y_(tbar). Parton-level results derived, yielding 0.164+/-0.047 (stat + syst). observe a linear AFB top-quark pair mass...
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...
Using the full CDF Run II data sample, we report evidence for a new resonance, which refer to as $B(5970)$, found simultaneously in ${B}^{0}{\ensuremath{\pi}}^{+}$ and ${B}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ mass distributions with significance of 4.4 standard deviations. We further first study resonances consistent orbitally excited ${B}^{+}$ mesons an updated measurement properties ${B}^{0}$ ${B}_{s}^{0}$ mesons. measure masses widths all states, well relative production rates...
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 goal of the Muon g-2 experiment at Fermilab is to measure muon magnetic moment anomaly with a final accuracy 140 parts per billion (ppb). has published two results based on data collected in 2018 (Run-1) and 2019-2020 (Run-2/3), respectively. These confirm previous measurement performed 20 years ago Brookhaven National Laboratory, their combination reaches unprecedented uncertainty 200 ppb. This proceeding presents brief overview Standard Model prediction for g-2. It then summarizes...
We report final measurements of direct CP-violating asymmetries in charmless decays neutral bottom hadrons to pairs charged with the upgraded Collider Detector at Fermilab Tevatron. Using complete √s=1.96 TeV proton-antiproton collisions data set, corresponding 9.3 fb⁻¹ integrated luminosity, we measure A(Λ(b)⁰→pπ⁻)=+0.06±0.07(stat)±0.03(syst) and A(Λ(b)⁰→pK⁻)=-0.10±0.08(stat)±0.04(syst), compatible no asymmetry. In addition B(s)⁰→K⁻π⁺ B⁰→K⁺π⁻ be A(B(s)⁰→K⁻π⁺)=+0.22±0.07(stat)±0.02(syst)...
We measure the inclusive forward--backward asymmetry of charged-lepton pseudorapidities from top-quark pairs produced in proton--antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with Collider Detector at Fermilab correspond an integrated luminosity $9.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. leptonic asymmetry, ${A}_{\mathrm{FB}}^{\ensuremath{\ell}}$, be $0.072\ifmmode\pm\else\textpm\fi{}0.060$ pair...
Using data from proton-antiproton collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ recorded by the CDF II detector Fermilab Tevatron, evidence for excited resonance state ${\ensuremath{\Lambda}}_{b}^{*0}$ is presented in its ${\ensuremath{\Lambda}}_{b}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ decay followed ${\ensuremath{\Lambda}}_{b}^{0}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and...
A search for the exotic meson $X(5568)$ decaying into $B^0_s \pi^{\pm}$ final state is performed using data corresponding to $9.6 \textrm{fb}^{-1}$ from $p{\bar p}$ collisions at $\sqrt{s} = 1960$ GeV recorded by Collider Detector Fermilab. No evidence this found and an upper limit of 6.7\% 95\% confidence level set on fraction $B^0_s$ produced through $X(5568) \rightarrow B^0_s \, process.
We measure the asymmetry in charge-weighted rapidity $q{y}_{\ensuremath{\ell}}$ of lepton semileptonic $t\overline{t}$ decays recorded with CDF II detector using full Tevatron Run sample, corresponding to an integrated luminosity $9.4\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. A parametrization as a function is used correct for finite acceptance and recover production-level asymmetry. The result ${A}_{\mathrm{FB}}^{\ensuremath{\ell}}={0.094}_{\ensuremath{-}0.029}^{+0.032}$ be compared...
We present a measurement of the total decay width top quark using events with top-antitop-quark pair candidates reconstructed in final state one charged lepton and four or more hadronic jets. use full Tevatron Run II data set $\sqrt{s} = 1.96$ TeV proton-antiproton collisions recorded by CDF detector. The top-quark mass hadronically-decaying $W$ boson are for each event compared distributions derived from simulated signal background samples to extract (\gmt) energy scale calorimeter jets...
This Letter reports a measurement of the cross section for producing pairs central prompt isolated photons in proton-antiproton collisions at total energy 1.96 TeV using data corresponding to 9.5/fb integrated luminosity collected with CDF II detector Fermilab Tevatron. The measured differential is compared three calculations derived from theory strong interactions. These include prediction based on leading order matrix element calculation merged parton shower, next-to-leading order, and...
We study charged particle production in proton-antiproton collisions at 300 GeV, 900 and 1.96 TeV. use the direction of with largest transverse momentum each event to define three regions eta-phi space; toward, away, transverse. The average number scalar pT sum particles region are sensitive modeling underlying event. is divided into a MAX MIN region, which helps separate hard component (initial final-state radiation) from beam-beam remnant multiple parton interaction components scattering....
We measure the time dependence of ratio decay rates for D0 -> K+ pi- to Cabibbo-favored K- pi+. The charge conjugate decays are included. A signal 3.3 x 10^4 D*+ pi+ D0, is obtained with proper times between 0.75 and 10 mean lifetimes. data were recorded CDF II detector at Fermilab Tevatron correspond an integrated luminosity 9.6 fb-1 p-pbar collisions sqrt(s) = 1.96 TeV. Assuming CP conservation, we search D0-D0bar mixing parameters be R_D (3.51 +/- 0.35) 10^{-3}, y' (4.3 4.3) x'^2 (0.08...
We present a combination of searches for the standard model Higgs boson using full CDF run II data set, which corresponds to an integrated luminosity $9.45--10.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected from $\sqrt{s}=1.96\text{ }\mathrm{TeV}$ $p\overline{p}$ collisions at Fermilab Tevatron. The consider production gluon-gluon fusion, vector-boson and associated with either $W$ or $Z$ $t\overline{t}$ pair. Depending on mode, decays ${W}^{+}{W}^{\ensuremath{-}}$, $ZZ$,...
This Letter reports a search for narrow resonant state decaying into two W bosons and b quarks where one boson decays leptonically the other quark-antiquark pair. The is particularly sensitive to top-antitop production. We use full data sample of proton-antiproton collisions at center-of-mass energy 1.96 TeV collected by CDF II detector Fermilab Tevatron, corresponding an integrated luminosity 9.45 fb(-1). No evidence production found, upper limits on cross section times branching ratio are...
We report on mass and lifetime measurements of several ground state charmed bottom baryons, using a data sample corresponding to $9.6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ from $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$ recorded with the Collider Detector Fermilab. Baryon candidates are reconstructed collected an online event selection designed for collection long-lifetime heavy-flavor decay products second collect...
We present a search for the pair production of narrow nonstandard-model strongly interacting particle that decays to quarks or gluons, leading final state with four hadronic jets. consider both nonresonant via an intermediate gluon as well resonant distinct particle. use data collected by CDF experiment in proton-antiproton collisions at √[s]=1.96 TeV corresponding integrated luminosity 6.6 fb(-1). find be consistent production. report limits on σ(pp[over ¯]→jjjj) function masses...
We present a measurement of the $W$-boson mass, $M_W$, using data corresponding to 2.2/fb integrated luminosity collected in ppbar collisions at $\sqrt{s}$ = 1.96 TeV with CDF II detector Fermilab Tevatron. The selected sample 470126 $W\to e\nu$ candidates and 624708 $W\to\mu\nu$ yields $M_W 80387\pm 12$ (stat) $\pm 15$ (syst)$ 80387 \pm 19$ MeV$/c^2$ . This is most precise single mass date.
We measure exclusive $\pi^+\pi^-$ production in proton-antiproton collisions at center-of-mass energies $\sqrt{s}$ = 0.9 and 1.96 TeV the Collider Detector Fermilab. select events with two oppositely charged particles, assumed to be pions, pseudorapidity $|\eta| < 1.3$ no other particles detected 5.9$. require system have rapidity $|y|<$ 1.0. The mechanism of these is expected dominated by double pomeron exchange, which constrains quantum numbers central state. data are potentially valuable...