L. Bianchi
A5031361433- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Statistical Methods and Bayesian Inference
- Cosmology and Gravitation Theories
- Pulsars and Gravitational Waves Research
- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Stochastic processes and statistical mechanics
- Computational Physics and Python Applications
- Radiation Therapy and Dosimetry
- Superconducting Materials and Applications
- Mass Spectrometry Techniques and Applications
- Advanced X-ray and CT Imaging
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Chemical Physics Studies
- Atomic and Molecular Physics
- Rare-earth and actinide compounds
- Face recognition and analysis
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2014-2025
University of Genoa
2025
Department of Medical Sciences
2025
A. Alikhanyan National Laboratory
2015-2024
University of Bergen
2016-2024
European Organization for Nuclear Research
2012-2024
University of Turin
2010-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2012-2023
University of Houston
2015-2023
Aligarh Muslim University
2022-2023
We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at sqrt[S(NN)] =2.76 TeV with ALICE detector CERN Large Hadron Collider. The is performed central pseudorapidity region (|η|<0.8) and transverse momentum range 0.2<p t<5.0 GeV/c. signal v₂, measured using 4-particle correlation method, averaged over 0.087 ± 0.002(stat) 0.003(syst) 40%-50% centrality class. differential v₂ p t reaches a maximum 0.2 near =3 Compared to RHIC Au-Au 200 GeV, increases by about...
Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5<pT,assoc<pT,trig<4GeV/c. The over two units pseudorapidity full azimuthal angle different intervals event multiplicity, expressed as yield per particle. Two long-range ridge-like structures, one on near side away side, observed when per-trigger obtained low-multiplicity...
The centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions sqrt[s_{NN}]=2.76 TeV is presented. normalized per participating nucleon pair increases by about a factor 2 from peripheral (70%-80%) to central (0%-5%) collisions. found be similar that observed lower collision energies. data are compared with models based on different mechanisms for particle production nuclear
In this paper measurements are presented of $\rm \pi$$^+$, \pi$$^-$, K$^+$, K$^-$, p and $\overline{\rm p}$ production at mid-rapidity < 0.5, in Pb-Pb collisions $\sqrt{s_{\rm NN}} = 2.76$ TeV as a function centrality. The measurement covers the transverse momentum ($p_{\rm T}$) range from 100, 200, 300 MeV/$c$ up to 3, 4.6 GeV/$c$, for $\rm\pi$, K, respectively. measured $p_{\rm T}$ distributions yields compared expectations based on hydrodynamic, thermal recombination models. spectral...
We report on the first measurement of triangular ${v}_{3}$, quadrangular ${v}_{4}$, and pentagonal ${v}_{5}$ charged particle flow in Pb-Pb collisions at $\sqrt{{s}_{\mathrm{NN}}}=2.76\text{ }\text{ }\mathrm{TeV}$ measured with ALICE detector CERN Large Hadron Collider. show that can be described terms initial spatial anisotropy its fluctuations, which provides strong constraints origin. In most central events, where elliptic ${v}_{2}$ ${v}_{3}$ have similar magnitude, a double peaked...
At sufficiently high temperature and energy density, nuclear matter undergoes a transition to phase in which quarks gluons are not confined: the Quark-Gluon Plasma (QGP) [1]. Such an extreme state of strongly-interacting QCD (Quantum Chromo-Dynamics) is produced laboratory with high-energy collisions heavy nuclei, where enhanced production strange hadrons observed [2-6]. Strangeness enhancement, originally proposed as signature QGP formation [7], more pronounced for multi-strange baryons....
Inclusive transverse momentum spectra of primary charged particles in Pb–Pb collisions at sNN=2.76TeV have been measured by the ALICE Collaboration LHC. The data are presented for central and peripheral collisions, corresponding to 0–5% 70–80% hadronic cross section. particle |η|<0.8 0.3<pT<20GeV/c compared expectation pp same sNN, scaled number underlying nucleon–nucleon collisions. comparison is expressed terms nuclear modification factor RAA. result indicates only weak medium effects...
This publication describes the methods used to measure centrality of inelastic Pb-Pb collisions at a center-of-mass energy 2.76 TeV per colliding nucleon pair with ALICE. The is key parameter in study properties QCD matter extreme temperature and density, because it directly related initial overlap region nuclei. Geometrical collision, such as number participating nucleons binary nucleon-nucleon collisions, are deduced from Glauber model sharp impact selection shown be consistent those...
In this Letter, comprehensive results on ${\rm\pi}^\pm$, K$^\pm$, K$^0_S$, p, $\rm\bar{p}$, $\rm \Lambda$ and \bar{\Lambda}$ production at mid-rapidity ($0 < y_{\rm cms} 0.5$) in p-Pb collisions $\sqrt{s_{\rm NN}} = 5.02$ TeV, measured by the ALICE detector LHC, are reported. The transverse momentum distributions exhibit a hardening as function of event multiplicity, which is stronger for heavier particles. This behavior similar to what has been observed pp Pb-Pb LHC. $p_{\rm T}$ compared...
The inclusive transverse momentum ($p_{\rm T}$) distributions of primary charged particles are measured in the pseudo-rapidity range $|\eta|<0.8$ as a function event centrality Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}=2.76$ TeV with ALICE LHC. data presented $p_{\rm T}$ $0.15<p_{\rm T}<50$ GeV/$c$ for nine intervals from 70-80% to 0-5%. spectra terms nuclear modification factor $R_{\rm{AA}}$ using pp reference spectrum same collision energy. We observe that suppression high-$p_{\rm strongly...
The first measurement of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions a center-of-mass energy per nucleon pair $\sqrt{{s}_{NN}}=2.76\text{ }\text{ }\mathrm{TeV}$ is presented. For an event sample corresponding to most central 5% hadronic cross section, pseudorapidity primary charged particles $1584\ifmmode\pm\else\textpm\fi{}4(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}76(\mathrm{syst})$, which corresponds $8.3\ifmmode\pm\else\textpm\fi{}0.4(\mathrm{syst})$...
ALICE is an LHC experiment devoted to the study of strongly interacting matter in proton-proton, proton-nucleus and nucleus-nucleus collisions at ultra-relativistic energies. The VZERO system, made two scintillator arrays asymmetric positions, one on each side interaction point, plays a central role ALICE. In addition its core function as trigger source, system used monitor beam conditions, reject beam-induced backgrounds measure basic physics quantities such luminosity, particle...
ALICE (A Large Ion Collider Experiment) is the LHC (Large Hadron Collider) experiment devoted to investigating strongly interacting matter created in nucleus-nucleus collisions at energies. The ITS, Inner Tracking System, consists of six cylindrical layers silicon detectors with three different technologies; outward direction: two pixel detectors, each drift, and strip detectors. number parameters be determined spatial alignment 2198 sensor modules ITS about 13,000. target precision well...
The first measurement of two-pion Bose-Einstein correlations in central Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV the Large Hadron Collider is presented. We observe a growing trend with energy now not only for longitudinal and outward but also sideward pion source radius. homogeneity volume decoupling time are significantly larger than those measured RHIC.
The ALICE measurement of K(S)(0) and Λ production at midrapidity in Pb-Pb collisions √(s(NN))=2.76 TeV is presented. transverse momentum (p(T)) spectra are shown for several collision centrality intervals the p(T) range from 0.4 GeV/c (0.6 Λ) to 12 GeV/c. dependence Λ/K(S)(0) ratios exhibits maxima vicinity 3 GeV/c, positions shift towards higher with increasing centrality. magnitude these increases by almost a factor three between most peripheral central collisions. This baryon excess...
Angular correlations between unidentified charged trigger particles and various species of associated (unidentified particles, pions, kaons, protons antiprotons) are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy 5.02 TeV transverse-momentum range $0.3 < p_{\rm T} 4$ GeV/$c$. The expressed as yield per particle obtained pseudorapidity $|\eta_{\rm lab}|<0.8$. Fourier coefficients extracted from long-range projected onto azimuthal angle difference...
The pseudorapidity density and multiplicity distribution of charged particles produced in proton-proton collisions at the LHC, a centre-of-mass energy $\sqrt{s} = 7$ TeV, were measured central region |$\eta$| < 1. Comparisons are made with previous measurements $\sqrt{s}$ 0.9 TeV 2.36 TeV. At 7 for events least one particle 1, we obtain dNch/deta 6.01 $\pm$ 0.01 (stat.) $^{+0.20}_{-0.12}$ (syst.). This corresponds to an increase 57.6% 0.4% $^{+3.6}_{-1.8}$% (syst.) relative significantly...
The production of $\pi^+$, $\pi^-$, $K^+$, $K^-$, p, and pbar at mid-rapidity has been measured in proton-proton collisions $\sqrt{s} = 900$ GeV with the ALICE detector. Particle identification is performed using specific energy loss inner tracking silicon detector time projection chamber. In addition, time-of-flight information used to identify hadrons higher momenta. Finally, distinctive kink topology weak decay charged kaons for an alternative measurement kaon transverse momentum ($p_{\rm...
The ALICE experiment has measured the inclusive J/$\psi$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}} } = 2.76$ TeV down to zero transverse momentum rapidity range $2.5 < y 4$. A suppression of yield is observed with respect one pp scaled by number binary nucleon-nucleon collisions. nuclear modification factor, integrated over 0-80% most central collisions, $0.545 \pm 0.032 \rm{(stat.)} 0.083 \rm{(syst.)}$ and does not exhibit a significant dependence on collision centrality....
The production of ${\rm\Xi}^-$ and ${\rm\Omega}^-$ baryons their anti-particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV has been measured using the ALICE detector. transverse momentum spectra mid-rapidity ($|y| < 0.5$) for charged $\rm\Xi$ $\rm\Omega$ hyperons have studied range $0.6 p_{\rm T} 8.0$ GeV/$c$ $1.2 7.0$ GeV/$c$, respectively, several centrality intervals (from most central 0-10% to peripheral 60-80% collisions). These compared with predictions recent hydrodynamic...
Measurements of charge-dependent azimuthal correlations with the ALICE detector at LHC are reported for Pb-Pb collisions $\sqrt{{s}_{NN}}=2.76\text{ }\text{ }\mathrm{TeV}$. Two- and three-particle in pseudorapidity range $|\ensuremath{\eta}|<0.8$ presented as a function collision centrality, particle separation pseudorapidity, transverse momentum. A clear signal compatible relative to reaction plane is observed, which shows little or no energy dependence when compared measurements RHIC...
The ALICE Collaboration at the LHC has measured J/ψ and ψ′ photoproduction mid-rapidity in ultra-peripheral Pb–Pb collisions $\sqrt{s_{\mathrm{NN}}}=2.76~\mathrm{TeV}$ . charmonium is identified via its leptonic decay for events where hadronic activity required to be minimal. analysis based on an event sample corresponding integrated luminosity of about 23 μb−1. cross section coherent incoherent production rapidity interval −0.9<y<0.9, are...
Measurements of cross sections inelastic and diffractive processes in proton--proton collisions at LHC energies were carried out with the ALICE detector. The fractions determined from a study gaps charged particle pseudorapidity distributions: for single diffraction (diffractive mass $M_X < 200$ GeV/$c^2$) $\sigma_{\rm SD}/\sigma_{\rm INEL} = 0.21 \pm 0.03, 0.20^{+0.07}_{-0.08}$, $0.20^{+0.04}_{-0.07}$, respectively centre-of-mass $\sqrt{s} 0.9, 2.76$, 7~TeV; double (for gap $\Delta\eta >...
The pseudorapidity density of charged particles ($\mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta$) at mid-rapidity in Pb-Pb collisions has been measured a center-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}$ = 5.02 TeV. It increases with centrality and reaches value $1943 \pm 54$ $|\eta|<0.5$ for the 5% most central collisions. A rise $\mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta$ as function is observed, steeper than that observed proton-proton following trend established by measurements lower...
Transverse momentum spectra of $π^{\pm}$, $\rm K^{\pm}$ and p($\bar{\rm p}$) up to $p_{\rm T}$ = 20 GeV/$c$ at mid-rapidity in pp Pb-Pb collisions $\sqrt{s_{\rm NN}}=$ 2.76 TeV have been measured using the ALICE detector Large Hadron Collider. The proton-to-pion kaon-to-pion ratios both show a distinct peak T} \approx 3 GeV/c$ central collisions. Below peak, < GeV/$c$, are good agreement with hydrodynamical calculations, suggesting that itself is dominantly result radial flow rather than...