Angela Badalà
A5042803430- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- Cosmology and Gravitation Theories
- Superconducting Materials and Applications
- Pulsars and Gravitational Waves Research
- CCD and CMOS Imaging Sensors
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Statistical Methods and Bayesian Inference
- Computational Physics and Python Applications
- Nuclear Materials and Properties
- Nuclear Physics and Applications
- Stochastic processes and statistical mechanics
- Pediatric Urology and Nephrology Studies
- advanced mathematical theories
- Theoretical and Computational Physics
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- International Science and Diplomacy
- Photocathodes and Microchannel Plates
Istituto Nazionale di Fisica Nucleare, Sezione di Catania
2016-2025
A. Alikhanyan National Laboratory
2018-2024
Financiadora de Estudos e Projetos
2023
National Council for Scientific and Technological Development
2023
National Nuclear Research Center
2023
Istituto Nazionale di Fisica Nucleare
1988-2019
University of Catania
2004-2005
Laboratoire de Physique Corpusculaire de Caen
1993
Centre National de la Recherche Scientifique
1993
In this Letter we report the first results on $\pi^\pm$, K$^\pm$, p and $\mathrm {p\overline{p}}$ production at mid-rapidity ($\left|y\right|<0.5$) in central Pb-Pb collisions $\sqrt{s_{\rm NN}}$ = 2.76 TeV, measured by ALICE experiment LHC. The $p_{\rm T}$ distributions yields are compared to previous 200 GeV expectations from hydrodynamic thermal models. spectral shapes indicate a strong increase of radial flow velocity with NN}}$, which models is expected as consequence increasing...
Abstract The ALICE experiment was proposed in 1993, to study strongly-interacting matter at extreme energy densities and temperatures. This proposal entailed a comprehensive investigation of nuclear collisions the LHC. Its physics programme initially focused on determination properties quark–gluon plasma (QGP), deconfined state quarks gluons, created such collisions. has been extended cover broader ensemble observables related Quantum Chromodynamics (QCD), theory strong interactions. studied...
Abstract A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 2, it produced wide range of physics results using all collision systems available In order to best exploit new opportunities opening up with upgraded detector technologies, undergone major upgrade during Long Shutdown 2 (2019–2022). This comprises move continuous readout, complete overhaul core detectors, well online event processing farm redesigned...
Invariant differential yields of deuterons and anti-deuterons in pp collisions at $\sqrt{s}$ = 0.9, 2.76 7 TeV the tritons, $^{3}$He nuclei their anti-nuclei have been measured with ALICE detector CERN Large Hadron Collider. The measurements cover a wide transverse momentum ($p_{\text{T}}$) range rapidity interval $|y|<0.5$, extending both energy $p_{\text{T}}$ reach previous up to 3 GeV/$c$ for $A=2$ 6 $A=3$. coalescence parameters (anti-)deuterons $^{3}\overline{\text{He}}$ exhibit an...
This Letter presents the first experimental observation of attractive strong interaction between a proton and multistrange baryon (hyperon) Ξ^{-}. The result is extracted from two-particle correlations combined p-Ξ^{-}⊕p[over ¯]-Ξ[over ¯]^{+} pairs measured in p-Pb collisions at sqrt[s_{NN}]=5.02 TeV LHC with ALICE. correlation function compared prediction obtained assuming only an Coulomb standard deviation range [3.6, 5.3] found. Since significantly enhanced respect to prediction, presence...
The first measurement at the LHC of charge-dependent directed flow (${v}_{1}$) relative to spectator plane is presented for Pb-Pb collisions $\sqrt{{s}_{\mathrm{NN}}}=5.02\text{ }\text{ }\mathrm{TeV}$. Results are reported charged hadrons and ${\mathrm{D}}^{0}$ mesons transverse momentum intervals ${p}_{\mathrm{T}}>0.2\text{ }\mathrm{GeV}/c$ $3<{p}_{\mathrm{T}}<6\text{ in 5%--40% 10%--40% centrality classes, respectively. difference between positively negatively hadron ${v}_{1}$ has a...
A bstract The production of prompt D 0 , + and *+ mesons was measured at midrapidity (| y | < 0.5) in Pb–Pb collisions the centre-of-mass energy per nucleon–nucleon pair $$ \sqrt{s_{\mathrm{NN}}} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mi>NN</mml:mi> </mml:msub> </mml:msqrt> </mml:math> = 5 . 02 TeV with ALICE detector LHC. were reconstructed via their hadronic decay channels yields central (0–10%) semicentral (30–50%)...
We study the polarization of inclusive J/ψ produced in Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV LHC dimuon channel, via measurement angular distribution its decay products. perform rapidity region 2.5<y<4, for three transverse momentum intervals (2<p_{T}<4, 4<p_{T}<6, 6<p_{T}<10 GeV/c) and as a function centrality collision 2<p_{T}<6 GeV/c. For first time, is measured with respect to event plane collision, by considering angle between positive-charge muon rest frame axis perpendicular...
The interaction of $\rm{K}^{-}$ with protons is characterised by the presence several coupled channels, systems like ${\rm \overline{K}^0}$n and $\pi\Sigma$ a similar mass same quantum numbers as $\rm{K}^{-}$p state. strengths these couplings to system are crucial importance for understanding nature $\Lambda(1405)$ resonance attractive strong interaction. In this article, we present measurements correlation functions in relative momentum space obtained pp collisions at $\sqrt{s}~=~13$ TeV,...
The production of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>2</a:mn><a:mi>S</a:mi><a:mo stretchy="false">)</a:mo></a:math> charmonium state was measured with ALICE in Pb-Pb collisions at <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msqrt><e:msub><e:mi>s</e:mi><e:mrow><e:mi>NN</e:mi></e:mrow></e:msub></e:msqrt><e:mo>=</e:mo><e:mn>5.02</e:mn><e:mtext> </e:mtext><e:mtext>...
The two-particle momentum correlation functions between charm mesons (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi mathvariant="normal">D</a:mi><a:mrow><a:mo>*</a:mo><a:mo>±</a:mo></a:mrow></a:msup></a:math> and <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mrow><d:msup><d:mrow><d:mi mathvariant="normal">D</d:mi></d:mrow><d:mrow><d:mo>±</d:mo></d:mrow></d:msup></d:mrow></d:math>) charged light-flavor (<g:math...
The first measurements of skewness and kurtosis mean transverse momentum (〈pT〉) fluctuations are reported in Pb–Pb collisions at sNN = 5.02 TeV, Xe–Xe 5.44 TeV pp s=5.02 using the ALICE detector. carried out as a function system size 〈dNch/dη〉|η|<0.51/3, charged particles with (pT) pseudorapidity (η), range 0.2<pT<3.0 GeV/c |η|<0.8, respectively. In collisions, positive is observed 〈pT〉 for all centralities, which significantly larger than what would be expected scenario independent particle...
Prompt D meson and non-prompt J/$\psi$ yields are studied as a function of the multiplicity charged particles produced in inelastic proton-proton collisions at centre-of-mass energy $\sqrt{s}=7$ TeV. The results reported ratio between given interval normalised to multiplicity-integrated ones (relative yields). They shown average value for charged-particle multiplicity). D$^0$, D$^+$ D$^{*+}$ mesons measured five $p_{\rm T}$ intervals from 1 20 GeV/$c$ $|y|<0.5$ via their hadronic decays....
The ALICE Collaboration reports the measurement of semi-inclusive distributions charged-particle jets recoiling from a high-transverse momentum trigger hadron in p-Pb collisions at $\sqrt{s_{\rm NN}} =5.02$ TeV. Jets are reconstructed tracks using anti-$k_{\rm T}$ algorithm with resolution parameter $R=0.2$ and $0.4$. A data-driven statistical approach is used to correct uncorrelated background jet yield. Recoil reported for transverse $15<p_{\rm T,jet}^{\rm ch} <50$ GeV/$c$ compared various...
Abstract The production of $$\pi ^{\pm }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> , $$\mathrm{K}^{\pm <mml:mrow> <mml:mi>K</mml:mi> </mml:mrow> $$\mathrm{K}^{0}_{S}$$ <mml:msubsup> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> $$\mathrm{K}^{*}(892)^{0}$$ <mml:mrow/> <mml:mo>∗</mml:mo> <mml:mo>(</mml:mo> <mml:mn>892</mml:mn> <mml:mo>)</mml:mo> $$\mathrm{p}$$ <mml:mi>p</mml:mi> $$\phi (1020)$$...
A bstract The cross section for coherent photonuclear production of J/ ψ is presented as a function the electromagnetic dissociation (EMD) Pb. measurement performed with ALICE detector in ultra-peripheral Pb-Pb collisions at centre-of-mass energy per nucleon pair $$ \sqrt{{\textrm{s}}_{\textrm{NN}}} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mi>NN</mml:mi></mml:msub></mml:msqrt></mml:math> = 5.02 TeV. Cross sections are five different...
The most precise measurements to date of the _{Λ}^{3}H lifetime τ and Λ separation energy B_{Λ} are obtained using data sample Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV collected by ALICE LHC. is reconstructed via its charged two-body mesonic decay channel (_{Λ}^{3}H→^{3}He+π^{-} charge-conjugate process). measured values τ=[253±11(stat)±6(syst)] ps B_{Λ}=[102±63(stat)±67(syst)] keV compatible with predictions from effective field theories confirm that structure consistent a weakly bound system.
The measurements of the inclusive J/ψ yield at midrapidity (|y|<0.9) and forward rapidity (2.5 <y< 4) in Pb–Pb collisions sNN=5.02 TeV with ALICE detector LHC are reported. production yields nuclear modification factors, RAA, measured as a function collision centrality, transverse momentum (pT), rapidity. average squared (〈pT〉 〈pT2〉) evaluated centrality midrapidity. Compared to previous publications, here entire dataset collected during Run 2 is used, which improves precision extends pT...
Deuterons are atomic nuclei composed of a neutron and proton held together by the strong interaction. Unbound ensembles deuteron third nucleon have been investigated in past using scattering experiments, they constitute fundamental reference nuclear physics to constrain interactions properties nuclei. In this work, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...
Abstract Luminosity determination within the ALICE experiment is based on measurement, in van der Meer scans, of cross sections for visible processes involving one or more detectors (visible sections). In 2015 and 2018, Large Hadron Collider provided Pb–Pb collisions at a centre-of-mass energy per nucleon pair √ s NN = 5.02 TeV. Two sections, associated with particle detection Zero Degree Calorimeter (ZDC) V0 detector, were measured scan. This article describes experimental set-up analysis...
In high-energy heavy-ion collisions, the correlations between emitted particles can be used as a probe to gain insight into charge creation mechanisms. this Letter, we report first results of such studies using electric balance function in relative pseudorapidity ($\Delta\eta$) and azimuthal angle ($\Delta\varphi$) Pb--Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV with ALICE detector Large Hadron Collider. The width decreases growing centrality (i.e. for more central collisions) both...
The inclusive J/$\psi$ elliptic ($v_2$) and triangular ($v_3$) flow coefficients measured at forward rapidity (2.5 $<y<$ 4) the $v_2$ midrapidity ($|y|<$ 0.9) in Pb-Pb collisions $\sqrt{s_{\rm NN}}$ = 5.02 TeV using ALICE detector LHC are reported. entire data sample collected during Run 2 is employed, amounting to an integrated luminosity of 750 $\mu$b$^{-1}$ 93 midrapidity. results obtained scalar product method reported as a function transverse momentum $p_{\rm T}$ collision centrality....
The production of prompt ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}$ baryons has been measured at midrapidity in the transverse momentum interval $0<{p}_{T}<1 \text{GeV}/c$ for first time, $pp$ and $p$--Pb collisions a center-of-mass energy per nucleon-nucleon collision $\sqrt{{s}_{NN}}=5.02\phantom{\rule{0.16em}{0ex}}\text{TeV}$. measurement was performed decay channel ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}p{K}_{S}^{0}$ by applying new reconstruction techniques using...
The measurement of the production deuterons, tritons and $^{3}\mathrm{He}$ their antiparticles in Pb-Pb collisions at $\sqrt{{s}_{NN}}=5.02\phantom{\rule{4pt}{0ex}}\mathrm{TeV}$ is presented this article. measurements are carried out midrapidity $(|y|< 0.5)$ as a function collision centrality using ALICE detector. ${p}_{\mathrm{T}}$-integrated yields, coalescence parameters ratios to protons antiprotons reported compared with nucleosynthesis models. comparison these results different systems...