0000000000515491

AUTHOR

S. Coli

showing 13 related works from this author

Feasibility study for the measurement of πN transition distribution amplitudes at P¯ANDA in p¯p→J/ψπ0

2017

The exclusive charmonium production process in (P) over barp annihilation with an associated pi 0 meson (p) over barp -> J/psi pi(0) is studied in the framework of QCD collinear factorization. The feasibility of measuring this reaction through the J/psi -> e(+) e(-) decay channel with the AntiProton ANnihilation at DArmstadt ((P) over bar ANDA) experiment is investigated. Simulations on signal reconstruction efficiency as well as the background rejection from various sources including the (P) over barp -> pi(+)pi(-)pi(0) and (p) over barp -> J/psi pi(0)pi(0) reactions are performed with PANDAROOT, the simulation and analysis software framework of the (P) over bar ANDA experiment. It is show…

Quantum chromodynamicsPhysicsParticle physicsLuminosity (scattering theory)AnnihilationMeson010308 nuclear & particles physics7. Clean energy01 natural sciencesParticle identificationNuclear physicsFactorizationAntiproton0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsBar (unit)Physical Review D
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Alignment of the ALICE Inner Tracking System with cosmic-ray tracks

2010

ALICE (A Large Ion Collider Experiment) is the LHC (Large Hadron Collider) experiment devoted to investigating the strongly interacting matter created in nucleus-nucleus collisions at the LHC energies. The ALICE ITS, Inner Tracking System, consists of six cylindrical layers of silicon detectors with three different technologies; in the outward direction: two layers of pixel detectors, two layers each of drift, and strip detectors. The number of parameters to be determined in the spatial alignment of the 2198 sensor modules of the ITS is about 13,000. The target alignment precision is well below 10 micron in some cases (pixels). The sources of alignment information include survey measurement…

Physics - Instrumentation and DetectorsPhysics::Instrumentation and DetectorsperspectiveHigh Energy PhisicsDetector alignment and calibration methods (lasers sources particle-beams); Particle tracking detectors (Solid-state detectors); Instrumentation; Mathematical Physics01 natural sciences7. Clean energylaw.inventionHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)lawParticle tracking detectors[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Tracking detectors; High Energy Phisics; Heavy Ion PhysicsDetectors and Experimental TechniquesDetector alignment and calibration methodsNuclear ExperimentInstrumentationphysics.ins-detMathematical PhysicsdetectorsPhysicsLarge Hadron ColliderSolenoidal vector fieldPhysicsDetectorInstrumentation and Detectors (physics.ins-det)particle-beams)collisionsParticle tracking detectors (Solid-state detectors) ; Detector alignment and calibration methods (lasers ; sources ; particle-beams)collaboration; collisions; detector alignment and calibration methods (lasers; sources; particle-beams); detectors; particle tracking detectors (solid-state detectors); performance; perspective; quark-gluon plasmaColliding beam accelerators collisions Pb-Pb collisionsParticle tracking detectors (Solid-state detectors); Detector alignment and calibration methods (lasers sources particle-beams); QUARK-GLUON PLASMAperformancesourcesquark-gluon plasmaDetector alignment and calibration methodFOS: Physical sciencesCosmic ray114 Physical sciencesNuclear physicsTracking detectorsOpticsparticle tracking detectors (solid-state detectors)0103 physical sciences[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physicsColliderPixel010308 nuclear & particles physicsbusiness.industryhep-exHeavy Ion Physicsdetector alignment and calibration methods (laserscollaborationQuark–gluon plasmaDetector alignment and calibration methods; Particle tracking detectorsALICE (propellant)business
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Study of doubly strange systems using stored antiprotons

2016

Bound nuclear systems with two units of strangeness are still poorly known despite their importance for many strong interaction phenomena. Stored antiprotons beams in the GeV range represent an unparalleled factory for various hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of systems which contain two or even more units of strangeness at the PANDA experiment at FAIR. For the first time, high resolution gamma-spectroscopy of doubly strange Lambda Lambda-hypernuclei will be performed, thus complementing measurements of ground state decays of Lambda Lambda-hypernuclei at J-PARC or possible …

Particle physicsNuclear and High Energy PhysicsCOLLISIONSStrong interactionNuclear TheoryhyperatomsAntiprotons; Hyperatoms; Hypernuclei; Strangeness; Nuclear and High Energy PhysicsEXCHANGE CURRENTSAntiprotonsStrangeness01 natural sciencesPartícules (Física nuclear)NONuclear physicsSubatomär fysikHypemucleistrangenessDECUPLET BARYONSELECTRIC QUADRUPOLE-MOMENTSHyperatoms0103 physical sciencesSubatomic PhysicsHypernuclei010306 general physicsNuclear ExperimentPhysicshypernucleiNUCLEI010308 nuclear & particles physicsHyperonStrangenessTransport theoryDOUBLE-LAMBDA-HYPERNUCLEIMODELOMEGAAntiprotonPhysics::Accelerator PhysicsHeavy ionHigh Energy Physics::ExperimentantiprotonsINTERMEDIATE ENERGIESEMULSIONNuclear Physics A
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The ALICE experiment at the CERN LHC

2008

Journal of Instrumentation 3(08), S08002 (2008). doi:10.1088/1748-0221/3/08/S08002

visible and IR photonsLiquid detectorshigh energyPhotonPhysics::Instrumentation and DetectorsTransition radiation detectorsTiming detectors01 natural sciencesOverall mechanics designParticle identificationSoftware architecturesParticle identification methodsGaseous detectorscluster findingDetector cooling and thermo-stabilizationDetector groundingParticle tracking detectors[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Special cablesDetector alignment and calibration methodsDetectors and Experimental TechniquesNuclear ExperimentVoltage distributions.Photon detectors for UVInstrumentationMathematical PhysicsQuantum chromodynamicsPhysicsLarge Hadron ColliderSpectrometersPhysicsDetectorcalibration and fitting methodsTransition radiation detectorScintillatorsData processing methodsAnalysis and statistical methodsData reduction methodsParticle physicsCherenkov and transition radiationTime projection chambers610dE/dx detectorsNuclear physicsCalorimetersPattern recognitionGamma detectors0103 physical sciencesddc:610Solid state detectors010306 general physicsMuonInstrumentation for heavy-ion acceleratorsSpectrometerLarge detector systems for particle and astroparticle physics010308 nuclear & particles physicsCERN; LHC; ALICE; heavy ion; QGPCherenkov detectorsComputingVoltage distributionsManufacturingscintillation and light emission processesanalysis and statistical methods; calorimeters; cherenkov and transition radiation; cherenkov detectors; computing; data processing methods; data reduction methods; de/dx detectors; detector alignment and calibration methods; detector cooling and thermo-stabilization; detector design and construction technologies and materials; detector grounding; gamma detectors; gaseous detectors; instrumentation for heavy-ion accelerators; instrumentation for particle accelerators and storage rings - high energy; large detector systems for particle and astroparticle physics; liquid detectors; manufacturing; overall mechanics design; particle identification methods; particle tracking detectors; pattern recognition; cluster finding; calibration and fitting methods; photon detectors for uv; visible and ir photons; scintillators; scintillation and light emission processes; simulation methods and programs; software architectures; solid state detectors; special cables; spectrometers; time projection chambers; timing detectors; transition radiation detectors; voltage distributionsInstrumentation for particle accelerators and storage ringsInstrumentation; Mathematical PhysicsHigh Energy Physics::ExperimentSimulation methods and programsDetector design and construction technologies and materials
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Two-pion Bose-Einstein correlations inppcollisions ats=900  GeV

2010

We report on the measurement of two-pion correlation functions from pp collisions at root s = 900 GeV performed by the ALICE experiment at the Large Hadron Collider. Our analysis shows an increase of the Hanbury Brown-Twiss radius with increasing event multiplicity, in line with other measurements done in particle- and nuclear collisions. Conversely, the strong decrease of the radius with increasing transverse momentum, as observed at the Relativistic Heavy Ion Collider and at Tevatron, is not manifest in our data.

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderMeson010308 nuclear & particles physicsNuclear TheoryHadronTevatronParticle acceleratorBose–Einstein correlations01 natural scienceslaw.inventionNuclear physicsPionlaw0103 physical sciencesHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsRelativistic Heavy Ion ColliderPhysical Review D
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Charged-Particle Multiplicity Density at Midrapidity in Central Pb-Pb Collisions atsNN=2.76  TeV

2010

The first measurement of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair root s(NN) = 2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section, the pseudorapidity density of primary charged particles at midrapidity is 1584 +/- 4(stat) +/- 76(syst), which corresponds to 8.3 +/- 0.4(syst) per participating nucleon pair. This represents an increase of about a factor 1.9 relative to pp collisions at similar collision energies, and about a factor 2.2 to central Au-Au collisions at root s(NN) = 0.2 TeV. This measurement provides the first experimental constraint for models…

PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsNuclear TheoryHadronGeneral Physics and AstronomyElementary particle01 natural sciencesCharged particleBaryonNuclear physicsPseudorapidity0103 physical sciencesHigh Energy Physics::ExperimentRapidityNuclear Experiment010306 general physicsNucleonPhysical Review Letters
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Suppression of charged particle production at large transverse momentum in central Pb–Pb collisions at sNN=2.76 TeV

2011

Inclusive transverse momentum spectra of primary charged particles in Pb-Pb collisions at root s(NN) = 2.76 TeV have been measured by the ALICE Collaboration at the LHC. The data are presented for central and peripheral collisions, corresponding to 0-5% and 70-80% of the hadronic Pb-Pb cross section. The measured charged particle spectra in |eta| < 0.8 and 0.3 < p(T) < 20 GeV/c are compared to the expectation in pp collisions at the same root s(NN), scaled by the number of underlying nucleon-nucleon collisions. The comparison is expressed in terms of the nuclear modification factor R-AA. The result indicates only weak medium effects (R-AA approximate to 0.7) in peripheral collisions. In cen…

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsHadronModification factor01 natural sciencesCentral regionSpectral lineCharged particleNuclear physicsCross section (physics)0103 physical sciencesTransverse momentumNuclear Experiment010306 general physicsPhysics Letters B
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Two-pion Bose–Einstein correlations in central Pb–Pb collisions at sNN=2.76 TeV

2011

The first measurement of two-pion Bose-Einstein correlations in central Pb-Pb collisions at root(NN)-N-S = 2.76 TeV at the Large Hadron Collider is presented. We observe a growing trend with energy now not only for the longitudinal and the outward but also for the sideward pion source radius. The pion homogeneity volume and the decoupling time are significantly larger than those measured at RHIC. (C) 2010 CERN. Published by Elsevier B.V. All rights reserved.

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsNuclear TheoryBose–Einstein correlationsDecoupling (cosmology)01 natural sciencesNuclear physicsPion0103 physical sciencesHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsPhysics Letters B
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Midrapidity Antiproton-to-Proton Ratio inppCollisons ats=0.9and 7 TeV Measured by the ALICE Experiment

2010

The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at root s = 0.9 and 7 TeV during the initial running periods of the Large Hadron Collider. The measurement covers the transverse momentum interval 0.45 < p(t) < 1.05 GeV/c and rapidity vertical bar y vertical bar < 0.5. The ratio is measured to be R-vertical bar y vertical bar<0.5 = 0.957 +/- 0.006(stat) +/- 0.0014(syst) at 0.9 Tev and R-vertical bar y vertical bar<0.5 = 0.991 +/- 0.005 +/- 0.014(syst) at 7 TeV and it is independent of both rapidity and transverse momentum. The results are consistent with the conventional model of baryon-number transport and set stringent limits on a…

PhysicsParticle physicsLarge Hadron ColliderProton010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyHadronGeneral Physics and Astronomy01 natural sciences7. Clean energyParticle identificationBaryonNuclear physicsAntiproton0103 physical sciencesHigh Energy Physics::ExperimentRapidityNuclear Experiment010306 general physicsBar (unit)Physical Review Letters
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Elliptic Flow of Charged Particles in Pb-Pb Collisions atsNN=2.76  TeV

2010

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at root s(NN) p = 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (vertical bar eta vertical bar < 0.8) and transverse momentum range 0.2 < p(t) < 5.0 GeV/c. The elliptic flow signal v(2), measured using the 4-particle correlation method, averaged over transverse momentum and pseudorapidity is 0.087 +/- 0.002(stat) +/- 0.003(syst) in the 40%-50% centrality class. The differential elliptic flow v(2)(p(t)) reaches a maximum of 0.2 near p(t) = 3 GeV/c. Compared to RHIC Au-Au collisions at root s(NN) = 200 GeV, the elliptic f…

PhysicsRange (particle radiation)Particle physicsLarge Hadron Collider010308 nuclear & particles physicsHadronElliptic flowGeneral Physics and Astronomy01 natural sciencesCharged particleNuclear physicsPseudorapidity0103 physical sciencesQuark–gluon plasmaHigh Energy Physics::ExperimentRapidityNuclear Experiment010306 general physicsPhysical Review Letters
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The ALICE Collaboration

2009

The production of mesons containing strange quarks (KS, φ) and both singly and doubly strange baryons ( , , and − + +) are measured at mid-rapidity in pp collisions at √ s = 0.9 TeV with the ALICE experiment at the LHC. The results are obtained from the analysis of about 250 k minimum bias events recorded in 2009. Measurements of yields (dN/dy) and transverse momentum spectra at mid-rapidity for inelastic pp collisions are presented. For mesons, we report yields (〈dN/dy〉) of 0.184 ± 0.002(stat.) ± 0.006(syst.) for KS and 0.021 ± 0.004(stat.) ± 0.003(syst.) for φ. For baryons, we find 〈dN/dy〉 = 0.048 ± 0.001(stat.) ± 0.004(syst.) for , 0.047 ± 0.002(stat.) ± 0.005(syst.) for and 0.0101 ± 0.0…

PhysicsStrange quarkNuclear and High Energy PhysicsLarge Hadron ColliderMeson010308 nuclear & particles physics7. Clean energy01 natural sciencesSpectral lineVisual artsNuclear physicsBaryonMinimum biasTransverse momentum0103 physical sciencesHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsALICE (propellant)Nuclear Experiment010306 general physics
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Femtoscopy ofppcollisions ats=0.9and 7 TeV at the LHC with two-pion Bose-Einstein correlations

2011

We report on the high statistics two-pion correlation functions from pp collisions at root s = 0.9 TeV and root s = 7 TeV, measured by the ALICE experiment at the Large Hadron Collider. The correlation functions as well as the extracted source radii scale with event multiplicity and pair momentum. When analyzed in the same multiplicity and pair transverse momentum range, the correlation is similar at the two collision energies. A three-dimensional femtoscopic analysis shows an increase of the emission zone with increasing event multiplicity as well as decreasing homogeneity lengths with increasing transverse momentum. The latter trend gets more pronounced as multiplicity increases. This sug…

PhysicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physicsHadronElementary particleMultiplicity (mathematics)Bose–Einstein correlations01 natural sciencesMomentumNuclear physicssymbols.namesakePionBose–Einstein statistics0103 physical sciencessymbolsNuclear Experiment010306 general physicsPhysical Review D
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Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions atsNN=2.76  TeV

2011

The centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at root s(NN) = 2: 76 TeV is presented. The charged-particle density normalized per participating nucleon pair increases by about a factor of 2 from peripheral (70%-80%) to central (0%-5%) collisions. The centrality dependence is found to be similar to that observed at lower collision energies. The data are compared with models based on different mechanisms for particle production in nuclear collisions.

Nuclear physicsPhysics010308 nuclear & particles physics0103 physical sciencesGeneral Physics and AstronomyMultiplicity (chemistry)Nuclear Experiment010306 general physicsNucleonCentrality01 natural sciencesCharged particlePhysical Review Letters
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