A. Aloisio
A5057778512- 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
- Radiation Detection and Scintillator Technologies
- Advancements in PLL and VCO Technologies
- Parallel Computing and Optimization Techniques
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Radiation Effects in Electronics
- Advanced Data Storage Technologies
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- VLSI and Analog Circuit Testing
- Low-power high-performance VLSI design
- Analog and Mixed-Signal Circuit Design
- Black Holes and Theoretical Physics
- Muon and positron interactions and applications
- Embedded Systems Design Techniques
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2016-2025
University of Naples Federico II
2016-2025
Atlas Scientific (United States)
2024
The University of Adelaide
2023
Superconducting and other Innovative Materials and Devices Institute
2018-2023
Istituto Nazionale di Fisica Nucleare
1990-2021
Stockholm University
2020
Federico II University Hospital
2014
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2012
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2012
Abstract The standard model of particle physics 1–4 describes the known fundamental particles and forces that make up our Universe, with exception gravity. One central features is a field permeates all space interacts 5–9 . quantum excitation this field, as Higgs manifests itself boson, only no spin. In 2012, properties consistent boson was observed by ATLAS CMS experiments at Large Hadron Collider CERN 10,11 Since then, more than 30 times many bosons have been recorded experiment, enabling...
This article documents the muon reconstruction and identification efficiency obtained by ATLAS experiment for 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV collected between 2015 2018 during Run 2 LHC. The increased instantaneous luminosity delivered LHC over this period required a reoptimisation criteria prompt muons. Improved newly developed algorithms were deployed to preserve high with low misidentification rate good momentum resolution. availability large samples...
Abstract The ATLAS experiment at the Large Hadron Collider has a broad physics programme ranging from precision measurements to direct searches for new particles and interactions, requiring ever larger more accurate datasets of simulated Monte Carlo events. Detector simulation with Geant4 is but requires significant CPU resources. Over past decade, developed utilized tools that replace most CPU-intensive component simulation—the calorimeter shower simulation—with faster methods. Here,...
The flavour-tagging algorithms developed by the ATLAS Collaboration and used to analyse its dataset of $\sqrt s = 13$ TeV $pp$ collisions from Run 2 Large Hadron Collider are presented. These new tagging based on recurrent deep neural networks, their performance is evaluated in simulated collision events. developments yield considerable improvements over previous jet-flavour identification strategies. At 77% $b$-jet efficiency operating point, light-jet (charm-jet) rejection factors 170 (5)...
Many extensions of the Standard Model predict production dark matter particles at LHC. Sufficiently light may be produced in decays Higgs boson that would appear invisible to detector. This Letter presents a statistical combination searches for H $\rightarrow$ where multiple modes are considered. These performed with ATLAS detector using 139 fb$^{-1}$ proton-proton collisions centre-of-mass energy $\sqrt{s} =13$ TeV In results =7$ and 8 TeV, an upper limit on branching ratio 0.107 (0.077)...
The first evidence for the Higgs boson decay to a <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>Z</a:mi></a:math> and photon is presented, with statistical significance of 3.4 standard deviations. result derived from combined analysis searches performed by ATLAS CMS Collaborations proton-proton collision datasets collected at CERN Large Hadron Collider (LHC) 2015 2018. These correspond integrated luminosities around <c:math...
We search for the rare decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>B</a:mi><a:mo>+</a:mo></a:msup><a:mo stretchy="false">→</a:mo><a:msup><a:mi>K</a:mi><a:mo>+</a:mo></a:msup><a:mi>ν</a:mi><a:mover accent="true"><a:mi>ν</a:mi><a:mo stretchy="false">¯</a:mo></a:mover></a:math> in a <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"><f:mn>362</f:mn><f:mtext> </f:mtext><f:mtext>...
Abstract The need for large-scale production of highly accurate simulated event samples the extensive physics programme ATLAS experiment at Large Hadron Collider motivates development new simulation techniques. Building on recent success deep learning algorithms, variational autoencoders and generative adversarial networks are investigated modelling response central region electromagnetic calorimeter to photons various energies. properties synthesised showers compared with from a full...
Abstract The ATLAS detector is installed in its experimental cavern at Point 1 of the CERN Large Hadron Collider. During Run 2 LHC, a luminosity ℒ = × 10 34 cm -2 s -1 was routinely achieved start fills, twice design luminosity. For 3, accelerator improvements, notably levelling, allow sustained running an instantaneous , with average up to 60 interactions per bunch crossing. has been upgraded recover single-lepton trigger thresholds while operating comfortably under 3 pileup conditions. A...
A measurement of event-plane correlations involving two or three event planes different order is presented as a function centrality for 7 ub-1 Pb+Pb collision data at sqrt(s_NN)=2.76 TeV, recorded by the ATLAS experiment LHC. Fourteen correlators are measured using standard method and scalar-product method, latter found to give systematically larger correlation signal. Several trends in dependence these observed. These not reproduced predictions based on Glauber model, which includes only...
Abstract Measurements of the Standard Model Higgs boson decaying into a $$b\bar{b}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>b</mml:mi> <mml:mover> </mml:mrow> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> pair and produced in association with W or Z leptons, using proton–proton collision data collected between 2015 2018 by ATLAS detector, are presented. The measurements use collisions Large Hadron Collider at centre-of-mass energy $$\sqrt{s} = 13\,\text...
A search for new-physics resonances decaying into a lepton and jet performed by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in $pp$ collisions at $\sqrt{s}=13$ TeV Large Hadron Collider are considered using an integrated luminosity of 139 fb$^{-1}$, corresponding to full Run 2 dataset. They searched events with two electrons or muons more jets, including jets identified as arising from fragmentation $c$- $b$-quarks. The observed yield each channel consistent Standard...
A bstract search for the supersymmetric partners of quarks and gluons (squarks gluinos) in final states containing jets missing transverse momentum, but no electrons or muons, is presented. The data used this were recorded by ATLAS experiment proton-proton collisions at a centre-of-mass energy $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV during Run 2 Large Hadron Collider, corresponding to an integrated...
Abstract Higgs boson properties are studied in the four-lepton decay channel (where lepton = e , $$\mu $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>μ</mml:mi> </mml:math> ) using 139 $$\hbox {fb}^{-1}$$ <mml:msup> <mml:mtext>fb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> of proton–proton collision data recorded at $$\sqrt{s}=$$ <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> 13 TeV by ATLAS experiment Large...
A bstract search for charged Higgs bosons decaying into a top quark and bottom is presented. The data analysed correspond to 139 fb − 1 of proton-proton collisions at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV, recorded with the ATLAS detector LHC. production heavy boson in association quark, pp → tbH + tbtb , explored H mass range from 200 2000 GeV using final states jets one electron or muon. Events...
A bstract search is performed for resonant and non-resonant Higgs boson pair production in the $$ \upgamma b\overline{b} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> <mml:mi>b</mml:mi> <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> final state. The data set used corresponds to an integrated luminosity of 36.1 fb −1 proton-proton collisions at a centre-of-mass energy 13 TeV recorded by ATLAS detector CERN Large Hadron Collider. No significant excess...
Abstract The results of a search for electroweakino pair production $$pp \rightarrow \tilde{\chi }^\pm _1 }^0_2$$ <mml:math...
A search for chargino$-$neutralino pair production in three-lepton final states with missing transverse momentum is presented. The study based on a dataset of $\sqrt{s} = 13$ TeV $pp$ collisions recorded the ATLAS detector at LHC, corresponding to an integrated luminosity 139 fb$^{-1}$. No significant excess relative Standard Model predictions found data. results are interpreted simplified models supersymmetry, and statistically combined from previous compressed spectra two-lepton states....
This Letter presents the observation and measurement of electroweak production a same-sign W boson pair in association with two jets using 36.1 fb^{-1} proton-proton collision data recorded at center-of-mass energy sqrt[s]=13 TeV by ATLAS detector Large Hadron Collider. The analysis is performed fiducial phase-space region, defined presence leptons, electron or muon, least large invariant mass rapidity difference. A total 122 candidate events are observed for background expectation 69±7...
We present a search for the direct production of light pseudoscalar decaying into two photons with Belle II detector at SuperKEKB collider. process e^{+}e^{-}→γa, a→γγ in mass range 0.2<m_{a}<9.7 GeV/c^{2} using data corresponding to an integrated luminosity (445±3) pb^{-1}. Light pseudoscalars interacting predominantly standard model gauge bosons (so-called axionlike particles or ALPs) are frequently postulated extensions model. find no evidence ALPs and set 95% confidence level upper...
Abstract A search for direct pair production of scalar partners the top quark (top squarks or third-generation up-type leptoquarks) in all-hadronic $$t{\bar{t}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>t</mml:mi><mml:mover><mml:mrow><mml:mi>t</mml:mi></mml:mrow><mml:mrow><mml:mo>¯</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:math> plus missing transverse momentum final state is presented. The analysis 139 $$\hbox {fb}^{-1}$$...
Abstract A search for heavy resonances decaying into a pair of Z bosons leading to $$\ell ^+\ell ^-\ell '^+\ell '^-$$ <mml:math...